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Chemical Structure| 17654-70-5
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Product Details of [ 17654-70-5 ]

CAS No. :17654-70-5 MDL No. :MFCD19440215
Formula : C8H2F2N2 Boiling Point : -
Linear Structure Formula :- InChI Key :UAKXPKOAUDLYKN-UHFFFAOYSA-N
M.W : 164.11 Pubchem ID :11137466
Synonyms :

Safety of [ 17654-70-5 ]

Signal Word:Warning Class:
Precautionary Statements:P261-P264-P270-P271-P280-P301+P312-P302+P352-P304+P340-P305+P351+P338-P330-P332+P313-P337+P313-P362-P403+P233-P405-P501 UN#:
Hazard Statements:H302-H315-H319-H335 Packing Group:
GHS Pictogram:

Application In Synthesis of [ 17654-70-5 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 17654-70-5 ]

[ 17654-70-5 ] Synthesis Path-Downstream   1~36

  • 1
  • [ 28342-75-8 ]
  • [ 544-92-3 ]
  • [ 17654-70-5 ]
  • 2
  • [ 17654-70-5 ]
  • [ 397299-94-4 ]
YieldReaction ConditionsOperation in experiment
67% With diisobutylaluminium hydride In toluene at 0℃; for 1h;
  • 3
  • [ 17654-70-5 ]
  • C24H30N4O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 6 steps 1.1: 67 percent / DIBAL-H / toluene / 1 h / 0 °C 2.1: 97 percent / K2CO3 / dimethylformamide / 1 h / 20 °C 3.1: Ti(O-i-Pr)4 / CHCl3 / 0.5 h / Heating 3.2: 45 percent / NaBH3CN / methanol / 20 °C 4.1: 75 percent / PBr3 / CH2Cl2; diethyl ether / 3 h / 20 °C 5.1: 95 percent / K2CO3 / dimethylsulfoxide / 2 h / 20 °C 6.1: 50 percent / N2H4*H2O / 1,1,1-trideuterio-methanol; CDCl3 / 12 h / 20 °C
  • 4
  • [ 17654-70-5 ]
  • [ 397300-00-4 ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: 67 percent / DIBAL-H / toluene / 1 h / 0 °C 2: 97 percent / K2CO3 / dimethylformamide / 1 h / 20 °C
  • 5
  • [ 17654-70-5 ]
  • [ 397300-10-6 ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1.1: 67 percent / DIBAL-H / toluene / 1 h / 0 °C 2.1: 97 percent / K2CO3 / dimethylformamide / 1 h / 20 °C 3.1: Ti(O-i-Pr)4 / CHCl3 / 0.5 h / Heating 3.2: 45 percent / NaBH3CN / methanol / 20 °C 4.1: 75 percent / PBr3 / CH2Cl2; diethyl ether / 3 h / 20 °C
  • 6
  • [ 17654-70-5 ]
  • [ 397300-06-0 ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 3 steps 1.1: 67 percent / DIBAL-H / toluene / 1 h / 0 °C 2.1: 97 percent / K2CO3 / dimethylformamide / 1 h / 20 °C 3.1: Ti(O-i-Pr)4 / CHCl3 / 0.5 h / Heating 3.2: 45 percent / NaBH3CN / methanol / 20 °C
  • 7
  • [ 17654-70-5 ]
  • [ 397300-14-0 ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 5 steps 1.1: 67 percent / DIBAL-H / toluene / 1 h / 0 °C 2.1: 97 percent / K2CO3 / dimethylformamide / 1 h / 20 °C 3.1: Ti(O-i-Pr)4 / CHCl3 / 0.5 h / Heating 3.2: 45 percent / NaBH3CN / methanol / 20 °C 4.1: 75 percent / PBr3 / CH2Cl2; diethyl ether / 3 h / 20 °C 5.1: 95 percent / K2CO3 / dimethylsulfoxide / 2 h / 20 °C
  • 8
  • [ 86-74-8 ]
  • [ 17654-70-5 ]
  • 4,6-di-(9H-carbazol-9-yl)isophthalonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
73% With potassium carbonate In N,N-dimethyl-formamide at 110℃; for 2h; 2 Synthesis of 4,6-di(9H-carbazol-9-yl)isophthalonitrile (Ref. 1). A mixture of carbazole (0406) (0.50 g, 3.05 mmol), 4,6-difluoroisophthalonitrile (1.53 g, 9.14 mmol), and potassium carbonate (1.69 g, 12.2 mmol) in 10 mL of N, A -di methylformami de (DMF) was stirred at 110 °C under ambient atmosphere for 2 h. The reaction mixture was poured into MeOH to afford yellow precipitation. After filtration, the resulting solid was washed with MeOH to give a yellow cake. The mixture was purified on silica gel column chromatography using 5: 1 (v/v) chloroform/hexane as eluent to give yellowish green solid (1.02 g) in 73.0% yield. NMR (500 MHz, CDCb, d): 8.49 (s, 1H), 8.14 (d, J= 7.0 Hz, 4H), 7.97 (s, 1H), 7.49 (t, J= 8.0 Hz, 4H), 7.40-7.36 (m, 8H).
With sodium hydride In tetrahydrofuran
2.3 g Stage #1: 9H-carbazole With sodium hydride In tetrahydrofuran; paraffin oil for 0.5h; Stage #2: 4,6-difluoro-1,3-benzenedicyanide In tetrahydrofuran; paraffin oil at 20℃; for 2h; 1.2 Synthesis of Intermediate 2 Containing 60% content in paraffin oilSodium hydride (0.9 g, 24.3 mmol) was washed with normal nucleic acid,A solution of carbazole (3.1 g, 18.2 mmol) in THF (tetrahydrofuran) at a concentration of 1 M is placed in sodium hydride.After stirring for 30 minutes, once all of the sodium hydride is dissolved, slowly add Intermediate 1 (1.0 g, 6.1 mmol) to a solution of 1 M in THF.After stirring at room temperature for 2 hours,The reaction is terminated by pouring methanol or distilled water.The reaction product was extracted with MC and subjected to column chromatography using a mixed solvent of chloroform / hexane to obtain 2.3 g of Intermediate 2.
  • 9
  • [ 86-74-8 ]
  • [ 17654-70-5 ]
  • 4-(9H-carbazol-9-yl)-6-fluoroisophthalonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
64% With sodium hydride In N,N-dimethyl-formamide for 10h; Reflux; 1 Intermediate 1-1 (4.31 g, 26.31 mmol), 9H-carbazole (4.4 g, 26.31 mmol), Sodium hydride (0.7 g, 28.94 mmol) was added to 90 ml of dimethylformamide, and the mixture was heated and stirred. Intermediate 1-1 (4.31 g, 26.31 mmol), 9H-carbazole (4.4 g, 26.31 mmol)Sodium hydride (0.7 g, 28.94 mmol) was added to 90 ml of dimethylformamide, and the mixture was heated and stirred.
37% Stage #1: 9H-carbazole With sodium hydride In tetrahydrofuran; mineral oil for 0.166667h; Inert atmosphere; Stage #2: 4,6-difluoro-1,3-benzenedicyanide In tetrahydrofuran; mineral oil at 0℃; for 10h; Inert atmosphere;
37% Stage #1: 9H-carbazole With sodium hydride In tetrahydrofuran Stage #2: 4,6-difluoro-1,3-benzenedicyanide In tetrahydrofuran; hexane at 20℃; for 10h; Synthesis of Intermediate 1-2 Sodium hydride (0.29 g, 7.2 mmol) was three times washed with hexane and dried udder vacuum for 2 hours. Subsequently, tetrahydroffiran (30 ml) was added thereto, and 30 minutes later, 9H-carbazole (1 g, 6.0 mmol) was added thereto. Afier minutes, Intermediate 1-1 (0.98 g, 6.0 mmol) was added thereto. The solution was stirred at room temperature for 10 hours and then, treated with magnesium sulfate by using dichioromethane to remove moisture and wet-purified through a column to obtain Intermediate 1-2 (0.7 g). A yield was 37%.
Stage #1: 9H-carbazole With sodium hydride In tetrahydrofuran at 20℃; for 1h; Stage #2: 4,6-difluoro-1,3-benzenedicyanide In tetrahydrofuran at 20℃; for 24h; Inert atmosphere; 1.3 Step 3. Synthesis of peripheral branch R1-3OHCz Add carbazole (3.1g, 17mmol), NaH (5.35g, 23mmol), THF (15mL) to the reaction flask, stir the reaction at room temperature for 1h, and then add 4,6-difluoro-1,3-benzenedicyanide ( 4.18g, 25.5mmol), reacted at room temperature under nitrogen protection for 24h. After the reaction is over, add water to precipitate, and then extract with dichloromethane. Purified by column chromatography, the intermediate product 4-(9hydro-carbazol-9-yl)-6-fluorobenzene-1,3-dinitrile containing a carbazole is obtained. Similarly, the intermediate product was reacted with 3-methoxycarbazole in a molar ratio of 1:1.5. After the reaction, R1-3OCH3Cz was obtained, which was dissolved in a reaction flask containing 20mL of dichloromethane, and then filled with 30mL Add 15 mL of 3-bromide to the separatory funnel of the dichloromethane solution, add it dropwise to the reaction flask under ice bath conditions, stir the reaction at 0°C for 4h, quench with methanol solution (20mL), The pH of the mixed solution was adjusted to be neutral by washing with sodium hydrogen, and finally the TADF branched chain R1-3OHCz was obtained by extraction and filtration, with a yield of 65%.

  • 10
  • [ 17654-70-5 ]
  • 6,6'-(9H,9'H-[3,3'-bicarbazole]-9,9'-diyl)bis(4-(9H-carbazol-9-yl)isophthalonitrile) [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / Inert atmosphere 1.2: 10 h / 0 °C / Inert atmosphere 2.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / Inert atmosphere 2.2: 10 h / Inert atmosphere
Multi-step reaction with 2 steps 1.1: sodium hydride / tetrahydrofuran 1.2: 10 h / 20 °C 2.1: sodium hydride / tetrahydrofuran / 0.17 h 2.2: 10 h / 20 °C
  • 11
  • [ 17654-70-5 ]
  • 6,6'-(9H,9'H-[3,4'-bicarbazole]-9,9'-diyl)bis(4-(9H-carbazol-9-yl)isophthalonitrile) [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / Inert atmosphere 1.2: 10 h / 0 °C / Inert atmosphere 2.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / Inert atmosphere 2.2: 10 h / Inert atmosphere
Multi-step reaction with 2 steps 1.1: sodium hydride / tetrahydrofuran 1.2: 10 h / 20 °C 2.1: sodium hydride / tetrahydrofuran / 0.17 h 2.2: 10 h / 20 °C
  • 12
  • [ 28342-75-8 ]
  • copper(l) cyanide [ No CAS ]
  • [ 17654-70-5 ]
YieldReaction ConditionsOperation in experiment
80% In N,N-dimethyl-formamide; for 14h;Inert atmosphere; Reflux; <strong>[28342-75-8]1,5-dibromo-2,4-difluorobenzene</strong> (5 g, 18.4 mmol) and copper (I) cyanide (CuCN) (4.9 g, 55.2 mmol) were added to dimethylformamide (90 ml), and the mixture was stirred under a nitrogen flow. Subsequently, the solution was heated up, refluxed and stirred for 14 hours, cooled down to room temperature, and filtered, and the filtered solution was treated with magnesium sulfate by using dichloromethane to remove moisture and purified through a column to obtain Intermediate 1-1 (2.4 g). A yield was 80percent.
6 g In N,N-dimethyl-formamide; for 17h;Reflux; Inert atmosphere; <strong>[28342-75-8]1,5-dibromo-2,4-difluorobenzene</strong>(30 g, 110.3 mmol)And cyanocopper(22.7 g, 253.7 mmol)After dissolving in DMF (120 ml), it was made into nitrogen atmosphere, and the temperature was raised, and the mixture was refluxed with stirring for 17 hours.The reaction solution was extracted with MC and then subjected to column chromatography using an ethyl acetate / hexane mixed solvent as eluent to obtain 6.0 g of Intermediate 1.
  • 13
  • [ 18628-07-4 ]
  • [ 17654-70-5 ]
  • 4,6-di(9H-[3,9'-bicarbazol]-9-yl)isophthalonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
62% General procedure: Sodium hydride (60% in oil, 0.16 g, 3.98 mmol) and 9H-3,9'-bicarbazole (0.85 g, 2.53 mmol) were stirred in 3 ml anhydrousDMF solvent under a nitrogen atmosphere. After 20 min, 4,5-difluorophthalonitrile (0.20 g, 1.21 mmol) in 5 ml DMF was addedthe mixture. The reaction mixture was stirred at room temperaturefor 1 h. The reaction mixture was quenched with distilled water.Organic layer of the mixture was extracted with dichloromethaneand distilled water. Then solvent of organic layer was evaporatedand purified by column chromatography (dichloromethane/nhexane).
  • 14
  • 5,13-dihydro-5,5-dimethylbenzofuran[3,2-c]acridine [ No CAS ]
  • [ 17654-70-5 ]
  • C50H34N4O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
62% Stage #1: 5,13-dihydro-5,5-dimethylbenzofuran[3,2-c]acridine With sodium hydride In tetrahydrofuran at 20℃; for 0.5h; Inert atmosphere; Stage #2: 4,6-difluoro-isophthalonitrile In tetrahydrofuran at 20℃; for 5h; Inert atmosphere; 1 Based on the reaction expression 1, a first compound is synthesized which has a molecular structure expressed as a chemical formula of a product in the reaction expression 1 (corresponding to the above chemical formula7).Specifically, a sodium hydride (60% in paraffin, 0.24 g, 9.70 mmol) is washed using a nucleic acid to remove a paraffin oil. Under a nitrogen gas stream, a furan derivative acridine (1.56 g, 5.24 mmol) dissolved in tetrahydrofuran is slowly added dropwise to the purified sodium hydride. Then, the mixture has been stirred for about 30 minutes at a room temperature to acquire a first product.Then, 4,6-difluoroisophthalonitrile (0.4 g, 2.43 mmol) is dissolved in tetrahydrofuran to acquire a second mixture which in turn is added slowly to the first product, and is agitated for about 5 hours at a room temperature, to acquire a second product.Subsequently, water and alcohol are added to the second product to terminate the reaction. A target product is extracted using distilled water and methylene chloride. The moisture remaining in the target product is removed using magnesium sulfate. Then, the target product is subjected to the polar column chromatography using a mixture solvent of acetone and n-nucleic acid, to acquire the first compound 1.1 g. Finally, a pure yellow powder of the first compound is obtained through a final purification by sublimation by about 0.9 g (62% yield).The final product has a following mass analysis (LC-Mass) m/z 722.85 [(M)+]. 1H NMR (400 MHZ, DMSO): δ 9.15 (s, 1H), 8.52 (s, 1H), 8.10-8.08 (d, 2H, J=4.00 Hz), 7.77-7.75 (d, 2H, J=2.00 Hz), 7.64-7.62 (m, 2H), 7.57-7.51 (m, 4H), 7.42-7.37 (m, 4H), 6.93-6.89 (t, 2H, J=5.33 Hz), 6.54-6.5 (t, 2H, J=5.33 Hz), 6.47-6.45 (d, 2H, J=4.00 Hz) 13C NMR (100 MHZ, CDCl3): δ 156.52, 150.37, 145.05, 137.71, 135.53, 134.87, 132.13, 124.85, 123.74, 121.80, 120.92, 118.78, 115.81, 11.52.
  • 15
  • [ 1583-58-0 ]
  • [ 17654-70-5 ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 7 steps 1.1: N,N-dimethyl-formamide; thionyl chloride / tetrahydrofuran / 5 h / Reflux 2.1: ammonium hydroxide / 1.5 h / -10 - 20 °C 3.1: trichlorophosphate / N,N-dimethyl-formamide / 7.5 h / -15 - 20 °C 4.1: sulfuric acid; nitric acid / 1.5 h / -10 - 20 °C 5.1: acetic acid; iron / ethanol / 4 h / 20 - 50 °C 6.1: sodium nitrite / water / 1 h / -10 °C 6.2: 1 h 7.1: zinc(II) cyanide; tetrakis(triphenylphosphine) palladium(0) / N,N-dimethyl-formamide / 10.5 h / 20 - 120 °C
  • 16
  • [ 72482-64-5 ]
  • [ 17654-70-5 ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 6 steps 1.1: ammonium hydroxide / 1.5 h / -10 - 20 °C 2.1: trichlorophosphate / N,N-dimethyl-formamide / 7.5 h / -15 - 20 °C 3.1: sulfuric acid; nitric acid / 1.5 h / -10 - 20 °C 4.1: acetic acid; iron / ethanol / 4 h / 20 - 50 °C 5.1: sodium nitrite / water / 1 h / -10 °C 5.2: 1 h 6.1: zinc(II) cyanide; tetrakis(triphenylphosphine) palladium(0) / N,N-dimethyl-formamide / 10.5 h / 20 - 120 °C
  • 17
  • [ 85118-02-1 ]
  • [ 17654-70-5 ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 5 steps 1.1: trichlorophosphate / N,N-dimethyl-formamide / 7.5 h / -15 - 20 °C 2.1: sulfuric acid; nitric acid / 1.5 h / -10 - 20 °C 3.1: acetic acid; iron / ethanol / 4 h / 20 - 50 °C 4.1: sodium nitrite / water / 1 h / -10 °C 4.2: 1 h 5.1: zinc(II) cyanide; tetrakis(triphenylphosphine) palladium(0) / N,N-dimethyl-formamide / 10.5 h / 20 - 120 °C
  • 18
  • [ 3939-09-1 ]
  • [ 17654-70-5 ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1.1: sulfuric acid; nitric acid / 1.5 h / -10 - 20 °C 2.1: acetic acid; iron / ethanol / 4 h / 20 - 50 °C 3.1: sodium nitrite / water / 1 h / -10 °C 3.2: 1 h 4.1: zinc(II) cyanide; tetrakis(triphenylphosphine) palladium(0) / N,N-dimethyl-formamide / 10.5 h / 20 - 120 °C
  • 19
  • [ 67152-20-9 ]
  • [ 17654-70-5 ]
  • 20
  • [ 952285-54-0 ]
  • [ 17654-70-5 ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1.1: sodium nitrite / water / 1 h / -10 °C 1.2: 1 h 2.1: zinc(II) cyanide; tetrakis(triphenylphosphine) palladium(0) / N,N-dimethyl-formamide / 10.5 h / 20 - 120 °C
  • 21
  • 2,4-difluoro-5-iodobenzonitrile [ No CAS ]
  • [ 17654-70-5 ]
YieldReaction ConditionsOperation in experiment
71.9% With zinc(II) cyanide; tetrakis(triphenylphosphine) palladium(0) In N,N-dimethyl-formamide at 20 - 120℃; for 10.5h; 6.G Preparation of G.4,6 - difluoroisophthalonitrile In a 100 mL single-necked flask, 2,4-difluoro-5-iodobenzonitrile (11.5 g, 43.3 mmol)Was dissolved in N, N-dimethylformamide (50 ml), zinc cyanide (3.1 g, 26.0 mmol) and tetrakis (triphenylphosphine) palladium (2.7 g, 2.2 mmol) were added and reacted at room temperature for 0.5 h,120 ° C for 10 h. Reaction is completed, while the hot filter,The filtrate into the ice water that is solid precipitation, suction filtration,The filter cake was beaten with a small amount of n-hexane (3 mL) and the target product was filtered4,6-difluoroisophthalonitrile (5.1 g) in a yield of 71.9%.
  • 22
  • [ 17654-70-5 ]
  • 6,6'-(9H,9'H-[4,4'-bicarbazole]-9,9'-diyl)bis(4-(9H-carbazol-9-yl)isophthalonitrile) [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1.1: sodium hydride / tetrahydrofuran 1.2: 10 h / 20 °C 2.1: sodium hydride / tetrahydrofuran / 0.17 h 2.2: 10 h / 20 °C
  • 23
  • [ 86-74-8 ]
  • [ 17654-70-5 ]
  • 3,5-di(9H-carbazol-9-yl)-[1,1'-biphenyl]-2,6-dicarbonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: potassium carbonate / N,N-dimethyl-formamide / 2 h / 110 °C 2: potassium carbonate; palladium diacetate; tricyclohexylphosphine; 2-Ethylhexanoic acid / 5,5-dimethyl-1,3-cyclohexadiene / 24.25 h / 20 - 100 °C / Inert atmosphere
  • 24
  • [ 17654-70-5 ]
  • 3',5'-di(9H-carbazol-9-yl)-[1,1':4',1''-terphenyl]-2',6'-dicarbonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1.1: potassium carbonate; palladium diacetate; tricyclohexylphosphine; 2-Ethylhexanoic acid / 5,5-dimethyl-1,3-cyclohexadiene / 20 - 100 °C / Inert atmosphere 2.1: sodium hydride / tetrahydrofuran; mineral oil / 1 h / 20 °C / Inert atmosphere 2.2: 1 h / 20 °C
  • 25
  • [ 17654-70-5 ]
  • 3',5'-bis(3,6-di-tert-butyl-9H-carbazol-9-yl)-[1,1':4',1''-terphenyl]-2',6'-dicarbonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1.1: potassium carbonate; palladium diacetate; tricyclohexylphosphine; 2-Ethylhexanoic acid / 5,5-dimethyl-1,3-cyclohexadiene / 20 - 100 °C / Inert atmosphere 2.1: sodium hydride / tetrahydrofuran; mineral oil / 1 h / 20 °C / Inert atmosphere 2.2: 2 h / 20 °C
  • 26
  • [ 108-86-1 ]
  • [ 17654-70-5 ]
  • 2,6-difluoro-[1,1'-biphenyl]-3,5-dicarbonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
30.7% With 2-Ethylhexanoic acid; palladium diacetate; potassium carbonate; tricyclohexylphosphine In 5,5-dimethyl-1,3-cyclohexadiene at 20 - 100℃; for 5.25h; Inert atmosphere; 2 Synthesis of 2,6-difluoro-[l,l'-biphenyl]-3,5-dicarbonitrile. A doubled-necked flask equipped with a stir bar was charged with 4,6-difluoroisophthalonitrile (0.50 g, 3.05 mmol), potassium carbonate (0.63 g, 4.57 mmol), palladium acetate (22 mg, 0.091 mmol) and tricyclohexylphosphine (78.4 mg, 0.274 mmol), which was evacuated and refilled with nitrogen for three times. The reaction mixture was added bromobenzene (0.64 mL, 6.09 mmol), 2-ethylhexanoic acid (0.05 mL, 0.305 mmol), and xylene (10 mL) and was stirred at room temperature for 15 min, then heated to 100 °C while stirring for 5 h. The reaction mixture was cooled to room temperature, diluted with ethyl acetate (10 mL) and water (10 mL), and filtered through Celite pad followed by washing with ethyl acetate. The aqueous layer was separated and extracted with ethyl acetate (20 mL). The combined organic layers were washed with brine and dried over anhydrous magnesium sulfate. The solvents were evaporated under vacuum, and the crude product was purified by silica gel column chromatography using 1 : 1 : 1 (v/v/v) hexane/toluene/CHCb as eluent to afford white solid (0.22 g, 30.7%). NMR (500 MHz, CDCb, d): 7.95 (t, J = 6.5 Hz, 1H), 7.56-7.53 (m, 3H), 7.43-7.41 (m, 2H).
  • 27
  • [ 108-86-1 ]
  • [ 17654-70-5 ]
  • 2,6-di(9H-carbazol-9-yl)-[1,1'-biphenyl]-3,5-dicarbonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1.1: potassium carbonate; palladium diacetate; tricyclohexylphosphine; 2-Ethylhexanoic acid / 5,5-dimethyl-1,3-cyclohexadiene / 5.25 h / 20 - 100 °C / Inert atmosphere 2.1: sodium hydride / tetrahydrofuran; mineral oil / 1 h / 20 °C / Inert atmosphere 2.2: 2 h / 20 °C
  • 28
  • [ 108-86-1 ]
  • [ 17654-70-5 ]
  • 3',5'-difluoro-[1,1':4',1''-terphenyl]-2',6'-dicarbonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
43.1% With 2-Ethylhexanoic acid; palladium diacetate; potassium carbonate; tricyclohexylphosphine In 5,5-dimethyl-1,3-cyclohexadiene at 20 - 100℃; Inert atmosphere; 2 Synthesis of 3',5'-difluoro-[l,l':4',l"-terphenyl]-2',6'-dicarbonitrile. A doubled- necked flask equipped with a stir bar was charged with 4,6-difluoroisophthalonitrile (0.50 g, 3.05 mmol), potassium carbonate (0.63 g, 4.57 mmol), palladium acetate (22 mg, 0.091 mmol) and tricyclohexylphosphine (78.4 mg, 0.274 mmol), which was evacuated and refilled with nitrogen for three times. The reaction mixture was added bromobenzene (0.64 mL, 6.09 mmol), 2-ethylhexanoic acid (0.05 mL, 0.305 mmol), and xylene (10 mL) and was stirred at room temperature for 15 min, then heated to 100 °C. To fully convert the reaction, additional bromobenzene (0.80 mL, 7.62 mmol) was added in 5 portions every half an hour. After stirring for 24 h, the reaction mixture was cooled to room temperature, diluted with CHCb (10 mL) and water (10 mL), and filtered through Celite pad followed by washing with CHCb. The aqueous layer was separated and extracted with CHCb (20 mL). The combined organic layers were washed with brine and dried over anhydrous magnesium sulfate. The solvents were evaporated under vacuum, and the crude product was purified by silica gel column chromatography using 1 : 1 :2 (v/v/v) hexane/toluene/CHCb as eluent to afford white solid (0.42 g, 43.1%). 'H NMR (500 MHz, (0423) CDCb, d): 7.62-7.54 (m, 8H), 7.49-7.47 (m, 2H).
  • 29
  • 2-fluoro-9,9-dimethylacridine [ No CAS ]
  • [ 17654-70-5 ]
  • C38H28F2N4 [ No CAS ]
YieldReaction ConditionsOperation in experiment
71% Stage #1: 2-fluoro-9,9-dimethylacridine With sodium hydride In tetrahydrofuran; mineral oil for 0.5h; Inert atmosphere; Reflux; Stage #2: 4,6-difluoro-1,3-benzenedicyanide In tetrahydrofuran; mineral oil at 60℃; for 24h; Inert atmosphere; 3 And the specific synthetic steps are: Add 2-fluoro-9,9-dimethylacridine (2.73g, 12mmol), 70% oil-dispersed sodium hydride (0.42 g, 12 mmol) and 20 mL of tetrahydrofuran were added to a 50 mL single-neck round bottom flask. After refluxing for 30 minutes under the protection of argon, 4,6-difluoro-m-cyanobenzene (0.82 g, 5 mmol) was added, and then refluxed at 60 ° C for 24 hours. Quenched with saturated brine, extracted with dichloromethane, and dried the organic phase over anhydrous sodium sulfate. Filter and spin dry. The product was passed through a column with a volume ratio of n-hexane: methylene chloride of 1: 1 to obtain 2.05 g of a product. Light yellow solid, 71% yield.
  • 30
  • [ 243-28-7 ]
  • [ 17654-70-5 ]
  • C24H12FN3 [ No CAS ]
YieldReaction ConditionsOperation in experiment
66% With sodium hydride; In N,N-dimethyl-formamide; for 10h;Heating; 4,6-difluoroisonaphthalonitrile (10 g, 60.97 mmol),5H-benzo [b] carbazole (13.24 g, 60.97 mmol) and sodium hydride (1.61 g, 67.06 mmol) are added to 180 ml of dimethylformamide, and the mixture is heated and stirred. After 8 hours, the reaction was completed, the temperature was lowered to room temperature, concentrated under reduced pressure, and column purified to prepare 14.53 g (yield 66%) of intermediate 2-1.
  • 31
  • [ 17654-70-5 ]
  • C68H40N6 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: sodium hydride / N,N-dimethyl-formamide / 10 h / Reflux 2: sodium hydride / N,N-dimethyl-formamide / 13 h / Heating
  • 32
  • [ 17654-70-5 ]
  • C50H29N5 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: sodium hydride / N,N-dimethyl-formamide / 10 h / Reflux 2: sodium hydride / N,N-dimethyl-formamide / 10 h / Heating
  • 33
  • [ 17654-70-5 ]
  • C54H31N5 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: sodium hydride / N,N-dimethyl-formamide / 10 h / Heating 2: sodium hydride / N,N-dimethyl-formamide / 10 h / Heating
  • 34
  • [ 17654-70-5 ]
  • 6,6'-(1,3-phenylenebis(oxy))bis(4-phenoxyisophthalonitrile) [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: caesium carbonate / 1-methyl-pyrrolidin-2-one / 13 h / 140 °C 2: caesium carbonate / 1-methyl-pyrrolidin-2-one / 13 h / 140 °C
  • 35
  • [ 17654-70-5 ]
  • C34H12B2N4O4 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 3 steps 1: caesium carbonate / 1-methyl-pyrrolidin-2-one / 13 h / 140 °C 2: caesium carbonate / 1-methyl-pyrrolidin-2-one / 13 h / 140 °C 3: o-xylene / 24 h / 150 °C
  • 36
  • [ 17654-70-5 ]
  • [ 108-46-3 ]
  • 6,6'-(1,3-phenylenebis(oxy))bis(4-fluoroisophthalonitrile) [ No CAS ]
YieldReaction ConditionsOperation in experiment
60% With caesium carbonate In 1-methyl-pyrrolidin-2-one at 140℃; for 13h; 4 4,6-Difluoroisophthalonitrile (5.8g),Resorcinol (3.10g, 29mM),Cs2CO3 (10.0g) and NMP (300mL) are added to the flask,And the mixed solution was stirred at a temperature of 140°C for 13 hours.Cool the reaction solution to room temperature,And perform column separation to obtain 3.4 g of intermediate compound 12-1(6,6'-(1,3-phenylenebis(oxy))bis(4-fluoroisophthalonitrile)) (Yield: 60%).
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