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Chemical Structure| 132874-06-7 Chemical Structure| 132874-06-7

Structure of 132874-06-7

Chemical Structure| 132874-06-7

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Product Details of [ 132874-06-7 ]

CAS No. :132874-06-7
Formula : C9H8BrNO4
M.W : 274.07
SMILES Code : O=C(OC)C1=CC=CC(CBr)=C1[N+]([O-])=O
MDL No. :MFCD09863874
InChI Key :GBBIAIKDRXKCQO-UHFFFAOYSA-N
Pubchem ID :22509333

Safety of [ 132874-06-7 ]

GHS Pictogram:
Signal Word:Danger
Hazard Statements:H302-H314
Precautionary Statements:P264-P270-P271-P280-P303+P361+P353-P304+P340-P305+P351+P338-P310-P330-P331-P363-P403+P233-P501
Class:8
UN#:3261
Packing Group:

Application In Synthesis of [ 132874-06-7 ]

* 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 [ 132874-06-7 ]

[ 132874-06-7 ] Synthesis Path-Downstream   1~35

  • 1
  • [ 5471-82-9 ]
  • [ 132874-06-7 ]
YieldReaction ConditionsOperation in experiment
41% With N-Bromosuccinimide; Perbenzoic acid; In tetrachloromethane; for 12.0h;Heating / reflux; Step B; Methyl 3-Bromomethyl-2-nitrobenzoate; Heat a mixture of methyl 3-methyl-2-nitrobenzoate (12.34 g, 63.23 mmol), benzoyl peroxide (0.920 g, 3.80 mmol) and N-bromosuccinimide (11.25 g, 63.21 mmol) in carbon tetrachloride (330 mL) at reflux under nitrogen for 12 h. Dilute the cooled mixture with methylene chloride (150 mL), treat with silica gel (30 g) and remove the solvents under reduced pressure. Purify the residue by flash column chromatography on silica gel, eluting with ethyl acetate/hexanes (15: 85), to provide methyl 3-bromomethyl-2- nitrobenzoate (1B) as a pale yellow solid (7.15 g, 41%) :'H NMR (CDC13) 8 3.91 (s, 3H), 4.46 (s, 2H), 7.58 (t, 1H), 7.74 (dd, 1H), 7.96 (dd, 1H).
35% With N-Bromosuccinimide; dibenzoyl peroxide; In tetrachloromethane; for 12.0h;Reflux; Inert atmosphere; Weigh compound 1 (2.34g, 12mmol), dissolve it with 0.2M carbon tetrachloride solution, add benzoyl peroxide (0.17g, 0.72mmol), NBS (2.18g, 14.16mmol), and reflux under nitrogen. 12 hours.After the mixture was cooled to room temperature, the filtrate was concentrated under reduced pressure, 30 mL of water was added, and extracted with EA three times. The organic phase was washed with brine, dried over anhydrous sodium sulfate, filtered, and distilled under reduced pressure to obtain a yellow mixture, which was subjected to column chromatography (eluent was Petroleum ether: ethyl acetate = 90: 1) to give Compound 2 (1.15 g, 35%) as a white flocculent solid.
30% With N-Bromosuccinimide; dibenzoyl peroxide; In tetrachloromethane; for 20.0h;Inert atmosphere; A mixture of Compound E (5.13 g, 26.3 mmol), benzoyl peroxide (511 mg, 2.11 mmol), and N- bromosuccinamide (14.1 g, 78.8 mmol) in CCU (120 mL) was heated under a nitrogen atmosphere for 20 h. The mixture was cooled to ambient temperature, diluted with dichloromethane and concentrated under reduced pressure. The residue was purified by flash column chromatography on silica gel using 10% EtOAc/hexanes (10:90) to yield Compound F (2.14 g, 7.80 mmol) in 30% yield as an off-white solid. NMR (400 MHz, CDCh) delta 7.93 (d, J= 7.7 Hz, 1H), 7.72 (d, J= 7.7 Hz, 1H), 7.57 (t, J = 7.7 Hz, 1H), 4.43 (s, 2H), 3.88 (s, 3H). MS (ES+) m/z: C9H8BrN04 requires 273/275, found 242/244 (M - MeO) 227/229 (M - N02). Physical state: Off-white solid; R/= 0.7 (mobile phase: EtOAc/hexanes, 20:80).
Part B. Methyl 3-(bromomethyl)-2-nitrobenzoate This product was prepared by following the procedure of Example 6, but substituting methyl 3-methyl-2-nitrobenzoate for 8-methylquinoline. The product was purified by chromatography on silica gel and was crystallized from ethyl acetate:hexane; mp 91-95 C.
With N-Bromosuccinimide; dibenzoyl peroxide; In tetrachloromethane; for 12.0h;Reflux; Step 2: Methyl 3-(bromomethyI)-2-nitrobenzoate (A2); A mixture of (Al) (1.0 eq.), (BzO)2 (0.06 eq.) and NBS (1.18 eq.) in CCl4 (0.2 M, with respect to Al) was heated at reflux under N2 atmosphere for 12 hr. The mixture was cooled to RT, diluted with DCM, concentrated under reduced pressure whilst dry loading onto SiO2. The residue was purified by flash column chromatography on SiO2 using 10:90 EtO Ac/Petroleum ether to yield the desired (A2) as a white solid. 1H NMR (400MHz, CDCl3, 300K) delta 7.93 (1 H, d, J = 7.7 Hz), 7.72 (IH, d, J = 7.7 Hz), 7.57 (IH, t, J = 7.7 Hz), 4.43 (2H, s), 3.88 (3H, s). MS (ES) C9H8BrNO4 requires: 273:275, found: 242:244 (M-MeO)+, 227:229 (M-NO2) +.
With N-Bromosuccinimide; dibenzoyl peroxide; In benzene; at 90.0℃; Process 2 Bromination Benzoyl peroxide was added to the mixture of methyl 2-nitro-3-methylbenzoate (1.6 g), N-bromosucciimide (2.0g) and benzene (15 mL) and stirred at 90 C. overnight. After removing the solvent, the residue was diluted with ethyl acetate and washed with sodium thiosulfate aqueous solution, 1M sodium hydrate aqueous solution, water and saturated aqueous solution of sodium chloride respectively. Then the obtained substance was concentrated and dried, and the obtained crude material was purified with silica gel column chromatography to obtain methyl 3-bromomethyl-2-nitrobenzoate.
With N-Bromosuccinimide; dibenzoyl peroxide; In tetrachloromethane; for 12.0h;Heating / reflux; Step 2: Methyl 3-(bromomethyl)-2-nitrobenzoate (A2); A mixture of (Al) (1.0 eq.), (BzO)2 (0.06 eq.) and NBS (1.18 eq.) in CCl4 (0.2 M) was heated at reflux under N2 atmosphere for 12 hr. The mixture was cooled to RT, diluted with DCM, concentrated under reduced pressure whilst dry loading onto SiO2. The residue was purified by flash column chromatography on SiO2 using 10:90 EtO Ac/Petroleum ether to yield the desired (A2) as a white solid. 1H NMR (400MHz, CDCl3, 300K) delta 7.93 (IH, d, J = 7.7 Hz), 7.72 (IH, d, J = 7.7 Hz), 7.57 (IH, t, J = 7.7 Hz), 4.43 (2H, s), 3.88 (3H, s). MS (ES) C9H8BrNO4 requires: 273:275, found: 242:244 (M-MeO)+, 227:229 (M-NO2) +.

  • 2
  • [ 603-35-0 ]
  • [ 132874-06-7 ]
  • (3-Methoxycarbonyl-2-nitro-benzyl)-triphenyl-phosphonium; bromide [ No CAS ]
  • 3
  • [ 109-77-3 ]
  • [ 132874-06-7 ]
  • [ 470448-74-9 ]
  • 4
  • [ 6456-74-2 ]
  • [ 132874-06-7 ]
  • [ 681430-73-9 ]
  • 6
  • [ 132874-06-7 ]
  • [ 681430-65-9 ]
  • 7
  • [ 132874-06-7 ]
  • [ 681430-74-0 ]
  • 8
  • [ 132874-06-7 ]
  • C44H44N8O13 [ No CAS ]
  • 9
  • [ 132874-06-7 ]
  • [ 681430-79-5 ]
  • 10
  • [ 132874-06-7 ]
  • 11a-cyano-5,11,11a,12-tetrahydro-dibenzo[<i>b</i>,<i>g</i>][1,8]naphthyridine-4,7-dicarboxylic acid dimethyl ester [ No CAS ]
  • 11
  • [ 132874-06-7 ]
  • [ 93247-78-0 ]
  • 12
  • [ 132874-06-7 ]
  • [ 126759-37-3 ]
  • 13
  • [ 132874-06-7 ]
  • [ 138229-59-1 ]
YieldReaction ConditionsOperation in experiment
78% With 4-methylmorpholine N-oxide; In acetonitrile; at 20.0℃; for 2.0h;Molecular sieve; Inert atmosphere; Compound 2 (2.74 g, 10 mmol) was weighed into a 150 mL single-necked flask, and a mixture (0.2 M) of molecular sieve in acetonitrile was added to dissolve it. Under the protection of nitrogen, N-methylmorpholine-N-oxide (2.34) was added. g, 20 mmol), reacted at room temperature for 2 hours, concentrated and poured into water, extracted three times with EA, the organic phase was washed with 1N HCl, brine, dried, filtered, concentrated, and subjected to column chromatography (eluent is petroleum ether : Ethyl acetate = 80: 1) to give Compound 3 (1.63 g, 78%) as a pale yellow solid.
74% With 4-methylmorpholine N-oxide; In acetonitrile; at 20.0℃; for 1.5h; Step C; Methyl 3-Formyl-2-nitrobenzoate; Add N-methylmorpholine oxide (NMO, 6.10 g, 52.07 mmol) to a mixture of <strong>[132874-06-7]methyl 3-bromomethyl-2-nitrobenzoate</strong> (7.13 g, 26.023 mmol) and 4 A molecular sieves (35.32 g) in acetonitrile (150 mL) = at room temperature under nitrogen and stir for 1.5 h. Dilute the mixture with ethyl acetate (600 mL), filter the mixture by vacuum filtration and wash the filtrate with water (100 mL), 1 N HC1 (100 mL) and brine (150 mL) and dry over Na2S04. Remove the solvents under reduced pressure and purify the residue by flash column chromatography on silica gel, eluting with ethyl acetate/hexanes (1: 3), to provide methyl 3-formyl-2-nitrobenzoate as an off-white solid (4.04 g, 74%) : 1H NMR (CDC13) 8 3.95 (s, 3H), 7.77 (t, 1H), 8. 18 (dd, 1H), 8.28 (dd, 1H), 9. 98 (s, 1H).
54% With 4-methylmorpholine N-oxide; In acetonitrile; at 20.0℃; for 12.0h; To a mixture of Compound F (1.97 g, 7.18 mmol) in MeCN (20 mL) was added N- methylmorpholine N-oxide (2.15 g, 17.9 mmol) at ambient temperature, and the reaction mixture was stirred for 12 h. The reaction mixture was diluted with EtOAc, washed with water, 1 M HCl and brine. The organic extracts were dried over Na2S04, filtered and evaporated under reduced pressure. The residue was purified by flash column chromatography on silica gel using 5% EtO Ac/petroleum ether to provide Compound G (824 mg, 3.93 mmol) in 54% yield. MR (400 MHz, CDCb) delta 9.96 (s, 1H), 8.26 (d, J= 7.9 Hz, 1H), 8.18 (d, J = 7.9 Hz, 1H), 7.77 (t, J= 7.9 Hz, 1H), 3.93 (s, 3H). MS (ES -) m/z: C9H7NO5 requires 209, found 208 (M - H)". Physical state: Off- white solid; R = 0.6 (mobile phase: EtOAc/hexanes, 1 :9).
With 4-methylmorpholine N-oxide; In acetonitrile; at 20.0℃;Molecular sieve; Step 3: Methyl 3-formyI-2-nitrobenzoate (A3); To a mixture of (A2) (1.0 eq.) and 4A mol. sieves in MeCN (0.2M) at RT was addedNMMO (2.0 eq.) and the reaction mixture was stirred for 1.5 hr under N2 atmosphere. Then, the mixture was diluted with EtOAc, filtered and the filtrate was washed with H2O, IN HCl, brine <n="37"/>and dried (Na2SO4). Evaporation of the solvent gave (A3) as a white solid which was used in the next step without further purification. 1H NMR (400MHz, CDCl3, 300K) delta 9.96 (IH, s), 8.26 (IH, d, J= 7.9 Hz), 8.18 (IH, d, J = 7.9 Hz), 7.77 (IH, t, J = 7.9 Hz), 3.93 (3H, s). MS (ES) C9H7NO5 requires: 209, found: 208 (M-H)'.
With 4-methylmorpholine N-oxide; In acetonitrile; at 20.0℃; for 1.5h;Molecular sieve; Step 3: Methyl 3-formyl-2-nitrobenzoate (A3); To a mixture of (A2) and 4A mol. sieves (15 g) in MeCN (0.2M) at RT was added NMMO (2.0 eq.) and the reaction mixture was stirred for 1.5 hr under N2 atmosphere. Then, the mixture was diluted with EtOAc, filtered and the filtrate was washed with H2O, IN HCl, brine and dried (Na2SO4). Evaporation of the solvent gave (A3) as a white solid which was used in the next step without further purification. 1H NMR (400MHz, CDC13, 3OOK) delta 9.96 (IH, s), 8.26 (IH, d, J= 7.9 Hz), 8.18 (IH, d, J = 7.9 Hz), 7.77 (IH, t, J = 7.9 Hz), 3.93 (3H, s). MS (ES) C9H7NO5 requires: 209, found: 208 (M-H)".

  • 14
  • [ 124-40-3 ]
  • [ 132874-06-7 ]
  • [ 857870-39-4 ]
YieldReaction ConditionsOperation in experiment
In methanol; Process 3 Amination Methyl 3-bromomethyl-2-nitrobenzoate (1.6 g) was dissolved in methanol (5 mL). Methanol solution (6 mL) of 2M dimethylamine was added thereto and stirred overnight. After removing the solvent, the residue was diluted with 1M hydrochloric acid and washed with ethyl acetate. The water layer was alkalized with sodium hydrate aqueous solution and extracted with ethyl acetate. The usual workup procedure was conducted to obtain methyl 3-dimethylaminomethyl-2-nitrobenzoate.
  • 15
  • [ 124-41-4 ]
  • [ 132874-06-7 ]
  • [ 857870-03-2 ]
YieldReaction ConditionsOperation in experiment
In methanol; for 0.0333333h;Heating / reflux; Methanol solution (4.7 mL) of sodium methoxide (197 mg) was added dropwise into the mixture of <strong>[132874-06-7]methyl 3-bromomethyl-2-nitrobenzoate</strong> (1 g) and methanol (7 mL) under heating and refluxing. Two minutes later, the mixture was cooled down with ice and 1.82 mL of 4M hydrogen chloride dioxane solution was added dropwise thereto. After removing the solvent, diethylether and water were added and the organic layer thereof was dried over sodium sulfate. After removing the solvent, the obtained residue was purified with silica gel column chromatography to obtain 621 mg of methyl 3-methoxymethyl-2-nitrobenzoate.
  • 16
  • tert-butyl (2,3-dihydro-1'H-spiro[indene-1,4'-piperidin]-1'-yl) propanoate [ No CAS ]
  • [ 132874-06-7 ]
  • [ 574741-19-8 ]
YieldReaction ConditionsOperation in experiment
1.85 g (57%) With 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone; ammonium chloride; lithium hexamethyldisilazane; In tetrahydrofuran; Preparation 23 Methyl 3-(2,3-dihydro-1'H-spiro[indene-1,4'-piperidine]-1'-ylmethyl)-2-oxo-1,2,3,4- tetrahydroquinoline-8-carboxylate To a stirred solution of tert-butyl (2,3-dihydro-1'H-spiro[indene-1,4'-piperidin]-1'-yl) propanoate (2.00 g, 6.34 mmol)) in THF (15 ml) was added 1.0 M THF solution of lithium bis(trimethylsilyl)amide (7.6 ml, 7.6 mmol) at -78 C. After 25 min stirring, DMPU (0.92 ml, 7.61 mmol) was added to the reaction mixture at -78 C. After 25 min stirring, a solution of <strong>[132874-06-7]methyl 3-bromomethyl-2-nitrobenzoate</strong> (2.09 g, 7.61 mmol, this was prepared according to the reported method: B. C. Soderberg et al, J. Org. Chem., 1997, 62, 5838) in THF (5 ml) was added to the reaction mixture at -78 C. and the resulting reaction mixture was stirred at -78 C. for 40 min and 0 C. for 20 min. The reaction mixture was quenched with aqueous solution of NH4Cl, extracted with CH2Cl2. The extracts combined were dried (MgSO4), filtered, concentrated, and purified by silica gel column chromatography (n-hexane/ethyl acetate:5/1) to afford 1.85 g (57%) of alkylated product as colorless oil. 1H NMR (270MHz, CDCl3) delta7.89 (1H, dd,J=1.3, 7.5 Hz), 7.59 (1H, dd, J=1.5, 8.1 Hz), 7.46 (1 H, dd, J=7.7, 7.7 Hz), 7.23-7.12 (4H, m), 3.90 (3H, s), 2.92-2.59 (8H, m), 2.48-2.38 (1H, m), 2.25-2.12 (2H, m), 2.02-1.78 (4H, m), 1.39 (9H, s).
  • 17
  • 2,2'-azobis(2-methylpropionitrile) (AIBN) [ No CAS ]
  • [ 5471-82-9 ]
  • [ 132874-06-7 ]
YieldReaction ConditionsOperation in experiment
In tetrachloromethane; Step 2: Synthesis of Methyl 2-nitro-3-bromomethylbenzoate: Methyl 2-nitro-3-methylbenzoate (15.3 gm) was suspended in carbon tetrachloride (45 mL) along with N-bromosuccinimide (15 3 gm) and heated to reflux. 2,2'-Azobis(2-methylpropionitrile) (AIBN) (0.4 gm) was added to the refluxing solution in four equal portions over 48 hours. The reaction was cooled to room temperature, filtered, and concentrated. The residue consisted of a mixture of starting material, desired product, and dibrominated material which were difficult to separate and so were used in the next step without purification.
  • 18
  • [ 132874-06-7 ]
  • [ 920760-14-1 ]
  • [ 1187238-35-2 ]
  • 19
  • [ 132874-06-7 ]
  • [ 574741-43-8 ]
  • 20
  • [ 132874-06-7 ]
  • [ 574741-51-8 ]
  • 21
  • [ 132874-06-7 ]
  • [ 574741-48-3 ]
  • 22
  • [ 132874-06-7 ]
  • [ 574741-21-2 ]
  • 23
  • [ 132874-06-7 ]
  • [ 574741-23-4 ]
  • 24
  • [ 5471-82-9 ]
  • [ 138229-56-8 ]
  • [ 132874-06-7 ]
  • 32
  • [ 132874-06-7 ]
  • [ 1248731-42-1 ]
 

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