Structure of 1238702-58-3
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CAS No. : | 1238702-58-3 |
Formula : | C15H19BN2O2 |
M.W : | 270.13 |
SMILES Code : | CC1(C)OB(OC1(C)C)C1=CC=NN1C1=CC=CC=C1 |
MDL No. : | MFCD23135814 |
InChI Key : | TZYVCRRPWKPCLH-UHFFFAOYSA-N |
Pubchem ID : | 58072367 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 20 |
Num. arom. heavy atoms | 11 |
Fraction Csp3 | 0.4 |
Num. rotatable bonds | 2 |
Num. H-bond acceptors | 3.0 |
Num. H-bond donors | 0.0 |
Molar Refractivity | 80.04 |
TPSA ? Topological Polar Surface Area: Calculated from |
36.28 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
0.0 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
2.91 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
2.17 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
1.67 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
1.38 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
1.62 |
Log S (ESOL):? ESOL: Topological method implemented from |
-3.62 |
Solubility | 0.0643 mg/ml ; 0.000238 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-3.33 |
Solubility | 0.126 mg/ml ; 0.000465 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-4.53 |
Solubility | 0.00805 mg/ml ; 0.0000298 mol/l |
Class? Solubility class: Log S scale |
Moderately soluble |
GI absorption? Gatrointestinal absorption: according to the white of the BOILED-Egg |
High |
BBB permeant? BBB permeation: according to the yolk of the BOILED-Egg |
Yes |
P-gp substrate? P-glycoprotein substrate: SVM model built on 1033 molecules (training set) |
Yes |
CYP1A2 inhibitor? Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set) |
No |
CYP2C19 inhibitor? Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set) |
No |
CYP2C9 inhibitor? Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set) |
No |
CYP2D6 inhibitor? Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set) |
Yes |
CYP3A4 inhibitor? Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set) |
Yes |
Log Kp (skin permeation)? Skin permeation: QSPR model implemented from |
-5.88 cm/s |
Lipinski? Lipinski (Pfizer) filter: implemented from |
0.0 |
Ghose? Ghose filter: implemented from |
None |
Veber? Veber (GSK) filter: implemented from |
0.0 |
Egan? Egan (Pharmacia) filter: implemented from |
0.0 |
Muegge? Muegge (Bayer) filter: implemented from |
0.0 |
Bioavailability Score? Abbott Bioavailability Score: Probability of F > 10% in rat |
0.55 |
PAINS? Pan Assay Interference Structures: implemented from |
0.0 alert |
Brenk? Structural Alert: implemented from |
1.0 alert: heavy_metal |
Leadlikeness? Leadlikeness: implemented from |
No; 1 violation:MW<0.0 |
Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) |
2.98 |
* 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.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
64% | In toluene; at 10 - 40℃; | Reference Example 1321-Phenyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole To a mixture of (1-phenyl-1H-pyrazol-5-yl)boronic acid (8.57 g, 45.6 mmol) in toluene (86 mL) was added pinacol (5.39 g, 45.6 mmol) at room temperature. The mixture was heated to 40 C. for 2 days. The mixture was concentrated in vacuo and triturated with hexane to yield the title compound (7.93 g, 64% yield) as a pale yellow solid: 1H NMR (DMSO-d6, 300 MHz): delta ppm 1.23 (12H, s), 6.84 (1H, s), 7.34-7.59 (5H, m), 7.75 (1H, d, J=1.9 Hz) |
19.8 g | In toluene; at 40℃; for 48h; | B) 1-phenyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (1-Phenyl-1H-pyrazol-5-yl)boronic acid (25.0 g) was dissolved in toluene (700 mL), pinacol (18.0 g) was added thereto at room temperature, and the mixture was stirred at 40 C. for 2 days. The reaction mixture was diluted with dichloromethane, and the mixture was washed with water and saturated brine, dried over anhydrous sodium sulfate, filtered, and concentrated. The resulting solid was collected by filtration, and washed with hexane to give the title compound (19.8 g). 1H NMR (400 MHz, CDCl3) delta 1.27 (12H, s), 6.89 (1H, d, J=1.6 Hz), 7.33-7.43 (3H, m), 7.52-7.55 (2H, m), 7.72 (1H, d, J=1.6 Hz). |
19.8 g | In toluene; at 20 - 40℃; for 48h; | B) 1-phenyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (1-Phenyl-1H-pyrazol-5-yl)boronic acid (25.0 g) was dissolved in toluene (700 mL), pinacol (18.0 g) was added at room temperature, and the mixture was stirred at 40 C. for 2 days. The reaction mixture was diluted with dichloromethane, washed successively with water and saturated brine, dried over anhydrous sodium sulfate and filtered, and the filtrate was concentrated. The resulting solid was collected by filtration, and washed with hexane to give the title compound (19.8 g). 1H NMR (400 MHz, CDCl3) delta 1.27 (12H, s), 6.89 (1H, d, J=1.6 Hz), 7.33-7.43 (3H, m), 7.52-7.55 (2H, m), 7.72 (1H, d, J=1.6 Hz). |
19.8 g | In toluene; at 20 - 40℃; for 48h; | E) 1-phenyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (1-Phenyl-1H-pyrazol-5-yl)boronic acid (25.0 g) was dissolved in toluene (700 mL), pinacol (18.0 g) was added at room temperature, and the mixture was stirred at 40 C. for 2 days. The reaction mixture was diluted with dichloromethane, washed with water and saturated brine, dried over anhydrous sodium sulfate, filtered and concentrated. The resulting solid was collected by filtration and washed with hexane to give the title compound (19.8 g). 1H NMR (400 MHz, CDCl3) delta 1.27 (12H, s), 6.89 (1H, d, J=1.6 Hz), 7.33-7.43 (3H, m), 7.52-7.55 (2H, m), 7.72 (1H, d, J=1.6 Hz). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
81% | With potassium acetate;bis(di-tert-?butyl(4-?dimethylaminophenyl)?phosphine)?dichloropalladium(II); In water; butan-1-ol; for 16h;Reflux; Inert atmosphere; | Example 885-Methoxy-3-(1-phenyl-1H-pyrazol-5-yl)-1-quinolin-8-ylpyridazin-4(1H)-one A mixture of 3-bromo-5-methoxy-1-quinolin-8-ylpyridazin-4(1H)-one (70 mg, 0.217 mmol), <strong>[1238702-58-3]1-phenyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole</strong> (88.1 mg, 0.326 mmol), KOAc (42.6 mg, 0.434 mmol) and PdCl2{P(t-Bu)2(Ph-p-NMe2)}2 (7.7 mg, 0.0109 mmol) in BuOH (1.1 mL) and water (0.1 mL) was heated to reflux for 16 h under Ar atmosphere. The mixture was diluted with water, extracted with AcOEt, washed with saturated NaHCO3 aqueous solution, dried over Na2SO4, filtered, concentrated in vacuo, purified by column chromatography on basic silica gel (hexane/AcOEt=50/50 to 0/100 and AcOEt/MeOH=100/0 to 70/30) and recrystallized with AcOEt/hexane to yield the title compound (69.9 mg, 81% yield) as a white solid: mp 189-192 C. 1H NMR (DMSO-d6, 300 MHz): delta ppm 3.76 (3H, s), 6.98 (1H, s), 7.31-7.49 (6H, m), 7.58-7.73 (2H, m), 7.78 (1H, d, J=1.9 Hz), 8.14 (1H, d, J=8.3 Hz), 8.54 (1H, d, J=7.9 Hz), 8.67 (1H, s), 8.99 (1H, d, J=4.1 Hz). Anal. Calcd for C23H17N5O2: C, 69.86; H, 4.33; N, 17.71. Found: C, 69.61; H, 4.37; N, 17.57. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
66% | With potassium carbonate;bis(di-tert-?butyl(4-?dimethylaminophenyl)?phosphine)?dichloropalladium(II); In water; toluene; for 20h;Reflux; Inert atmosphere; | Example 965-Methoxy-1-(2,2,3,3,7-pentafluoro-2,3-dihydro-1,4-benzodioxin-6-yl)-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one A mixture of 3-bromo-5-methoxy-1-(2,2,3,3,7-pentafluoro-2,3-dihydro-1,4-benzodioxin-6-yl)pyridazin-4(1H)-one (200 mg, 0.466 mmol), <strong>[1238702-58-3]1-phenyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole</strong> (189 mg, 0.699 mmol), K2CO3 (129 mg, 0.932 mmol) and PdCl2{P(t-Bu)2(Ph-p-NMe2)}2 (16.5 mg, 0.0233 mmol) in toluene (2.3 mL) and water (0.23 mL) was heated to reflux for 20 h under Ar. The mixture was diluted with water, brine and saturated NaHCO3 aqueous solution, extracted with AcOEt, dried over Na2SO4, filtered, concentrated in vacuo, purified by column chromatography on basic silica gel (hexane/AcOEt=50/50 to 0/100) and recrystallized with AcOEt/hexane to yield the title compound (150 mg, 66% yield) as a white solid: mp 192-194 C. 1H NMR (DMSO-d6, 300 MHz): delta ppm 3.76 (3H, s), 7.00 (1H, d, J=1.9 Hz), 7.28-7.48 (6H, m), 7.79 (1H, d, J=1.9 Hz), 7.93 (1H, d, J=10.5 Hz), 8.51 (1H, d, J=1.9 Hz). Anal. Calcd for C22H13F5N4O4: C, 53.67; H, 2.66; N, 11.38. Found: C, 53.73; H, 2.72; N, 11.33. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
78% | With bis(di-tert-?butyl(4-?dimethylaminophenyl)?phosphine)?dichloropalladium(II); potassium carbonate; In water; toluene; for 24h;Reflux; Inert atmosphere; | A mixture of 11 (13.6 g, 54.3 mmol), <strong>[1238702-58-3]1-phenyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole</strong> (22.0 g, 81.0mmol), K2CO3 (51.0 g, 109 mmol) and PdCl2[Pt-Bu2(Ph-p-NMe2)]2(1.92 g, 2.71 mmol) in toluene (330 mL) and water (33 mL) wasrefluxed for 24 h under N2 atmosphere. The mixture was dilutedwith water and saturated NaHCO3 aqueous solution. The mixturewas extracted with EtOAc, dried over Na2SO4, and concentratedunder reduced pressure. The residue was recrystallized fromEtOAc/hexane to give 12 (15.1 g, 78%) as a pale yellow solid. 1HNMR (DMSO-d6) d 3.81 (3H, s), 5.10 (2H, s), 6.95(1H, d, J = 1.6 Hz), 7.05-7.07 (2H, m), 7.24-7.38 (8H, m), 7.74 (1H,d, J = 1.6 Hz), 8.33 (1H, s). |
With bis(di-tert-?butyl(4-?dimethylaminophenyl)?phosphine)?dichloropalladium(II); potassium carbonate; In water; toluene; for 24h;Reflux; | A mixture of l-benzyl-3-chloro-5-methoxypyridazin-4 (1H) -one (13.6 g) , l-phenyl-5- (4, 4, 5, 5-tetramethyl-l, 3, 2-dioxaborolan-2- yl) -lif-pyrazole (22.0 g) , potassium carbonate (51.0 g) and PdCl2{Pt-Bu2 (Ph-p-NMe2) }2 (1.92 g) in toluene (330 mL) and water (33.0 mL) was stirred at reflux for 24 hr under nitrogen atmosphere. The reaction mixture was diluted with water and saturated sodium hydrogen carbonate aqueous solution, extracted with ethyl acetate, dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by recrystallization from ethyl acetate/hexane to give the title compound (15.1 g) as a pale yellow solid. ¾ NMR (400 MHz, DMSO-d6) delta 3.81 (3H, s) , 5.10 (2H, s) , 6.95 (1H, d, J = 1.6 Hz), 7.05-7.07 (2H, m) , 7.24-7.38 (8H, m) , 7.74 (1H, d, J = 1.6 Hz) , 8.33 (1H, s) . | |
15.1 g | With bis(di-tert-?butyl(4-?dimethylaminophenyl)?phosphine)?dichloropalladium(II); potassium carbonate; In water; toluene; for 24h;Reflux; Inert atmosphere; | E) 1-benzyl-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one 1-Benzyl-3-chloro-5-methoxypyridazin-4(1H)-one (13.6 g), <strong>[1238702-58-3]1-phenyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole</strong> (22.0 g), potassium carbonate (51.0 g) and bis(di-tert-butyl(4-dimethylaminophenyl)phosphine)dichloropalladium(II) (1.92 g) were suspended in toluene (330 mL) and water (33.0 mL), and the suspension was heated under reflux under a nitrogen atmosphere for 24 hr. The reaction mixture was allowed to be cooled to room temperature, diluted with water and saturated aqueous sodium hydrogen carbonate solution, and the mixture was extracted with ethyl acetate. The extract was dried over anhydrous sodium sulfate, filtered, and concentrated. The residue was recrystallized from ethyl acetate/hexane to give the title compound (15.1 g). 1H NMR (400 MHz, DMSO-d6) delta 3.81 (3H, s), 5.10 (2H, s), 6.95 (1H, d, J=1.6 Hz), 7.05-7.07 (2H, m), 7.24-7.38 (8H, m), 7.74 (1H, d, J=1.6 Hz), 8.33 (1H, s). |
15.1 g | With bis(di-tert-?butyl(4-?dimethylaminophenyl)?phosphine)?dichloropalladium(II); potassium carbonate; In water; toluene; for 24h;Reflux; Inert atmosphere; | E) 1-benzyl-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one 1-Benzyl-3-chloro-5-methoxypyridazin-4(1H)-one (13.6 g), <strong>[1238702-58-3]1-phenyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole</strong> (22.0 g), potassium carbonate (51.0 g) and bis(di-tert-butyl(4-dimethylaminophenyl)phosphine)dichloropalladium(II) (1.92 g) were suspended in toluene (330 mL) and water (33.0 mL), and the mixture was heated under reflux under a nitrogen atmosphere for 24 hr. The reaction mixture was cooled to room temperature, diluted with water and saturated aqueous sodium hydrogen carbonate solution, and the mixture was extracted with ethyl acetate. The extract was dried over anhydrous sodium sulfate and filtered, and the filtrate was concentrated, and the residue was recrystallized from ethyl acetate/hexane to give the title compound (15.1 g). 1H NMR (400 MHz, DMSO-d6) delta 3.81 (3H, s), 5.10 (2H, s), 6.95 (1H, d, J=1.6 Hz), 7.05-7.07 (2H, m), 7.24-7.38 (8H, m), 7.74 (1H, d, J=1.6 Hz), 8.33 (1H, s). |
15.1 g | With bis(di-tert-?butyl(4-?dimethylaminophenyl)?phosphine)?dichloropalladium(II); potassium carbonate; In water; toluene; at 24℃;Reflux; Inert atmosphere; | C) 1-benzyl-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one 1-Benzyl-3-chloro-5-methoxypyridazin-4(1H)-one (13.6 g), <strong>[1238702-58-3]1-phenyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole</strong> (22.0 g), potassium carbonate (51.0 g) and bis(di-tert-butyl(4-dimethylaminophenyl)phosphine)dichloropalladium(II) (1.92 g) were suspended in toluene (330 mL) and water (33.0 mL), and the mixture was heated under reflux for 24 hr under a nitrogen atmosphere. The reaction mixture was cooled to room temperature, diluted with water and saturated aqueous sodium hydrogen carbonate solution, extracted with ethyl acetate, dried over anhydrous sodium sulfate, filtered, concentrated, and recrystallized from ethyl acetate/hexane to give the title compound (15.1 g). 1H NMR (400 MHz, DMSO-d6) delta 3.81 (3H, s), 5.10 (2H, s), 6.95 (1H, d, J=1.6 Hz), 7.05-7.07 (2H, m), 7.24-7.38 (8H, m), 7.74 (1H, d, J=1.6 Hz), 8.33 (1H, s). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
0.0087 g | With tetrakis(triphenylphosphine) palladium(0); sodium carbonate; In ethanol; water; toluene; at 100℃; for 6h;Inert atmosphere; | E) 5-(1-phenyl-1H-pyrazol-5-yl)-1-[3-(trifluoromethyl)phenyl]pyridazin-4(1H)-one 5-oxo-2-[3-(trifluoromethyl)phenyl]-2,5-dihydropyridazin-4-yl trifluoromethanesulfonate (0.100 g), <strong>[1238702-58-3]1-phenyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole</strong> (0.139 g), sodium carbonate (0.109 g) and tetrakis(triphenylphosphine)palladium(0) (0.0298 g) were suspended in a mixed solvent of toluene (2.06 mL), ethanol (0.52 mL) and water (0.52 mL), and the suspension was stirred at 100 C. for 6 hr under an argon atmosphere. The reaction mixture was cooled to room temperature, diluted with water, extracted with ethyl acetate, washed with aqueous sodium hydrogen carbonate solution and saturated brine, dried over anhydrous magnesium sulfate, filtered, concentrated, purified by NH silica gel column chromatography (ethyl acetate/hexane) and recrystallized from ethyl acetate/hexane to give the title compound (0.0087 g). MS (ESI+): [M+H]+ 383.3. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
0.0007 g | With pyridine; copper diacetate; for 54h;Reflux; | B) 5-(2-fluorophenyl)-1-(1-phenyl-1H-pyrazol-5-yl)pyridin-2(1H)-one 5-(2-Fluorophenyl)pyridin-2(1H)-one (0.0281 g), <strong>[1238702-58-3]1-phenyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole</strong> (0.0802 g) and copper(II) acetate (0.0539 g) were suspended in pyridine (1.48 mL), and the suspension was stirred at room temperature for 12 hr and further at 90 C. for 6 hr. To the reaction mixture were added <strong>[1238702-58-3]1-phenyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole</strong> (0.0802 g) and copper(II) acetate (0.0539 g) at room temperature, and the mixture was heated under reflux for 1.5 days. The reaction mixture was cooled to room temperature, purified by NH silica gel column chromatography (ethyl acetate/hexane) and recrystallized from ethyl acetate/hexane to give the title compound (0.0007 g). MS (ESI+): [M+H]+ 332.2. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
0.21 g | With tris-(dibenzylideneacetone)dipalladium(0); caesium carbonate; XPhos; In 1,2-dimethoxyethane; water; at 110℃; for 4h;Microwave irradiation; | F) 2-(benzyloxy)-5-phenyl-3-(1-phenyl-1H-pyrazol-5-yl)pyrazine A mixture of 2-(benzyloxy)-3-bromo-5-phenylpyrazine (0.17 g), <strong>[1238702-58-3]1-phenyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole</strong> (0.20 g), X-phos (24 mg), Pd2(dba)3 (11 mg), 2M aqueous cesium carbonate solution (0.62 mL) and 1,2-dimethoxyethane (5.0 mL) was stirred at 110 C. for 1 hr under microwave irradiation. The reaction mixture was cooled to room temperature, filtered through celite, and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate/hexane) to give the title compound (0.21 g). 1H NMR (400 MHz, CDCl3) delta 5.44 (2H, s), 7.06 (1H, d, J=2.0 Hz), 7.28-7.40 (15H, m), 7.77 (1H, d, J=2.0 Hz), 8.47 (1H, s). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1.2 mg | With bis(di-tert-?butyl(4-?dimethylaminophenyl)?phosphine)?dichloropalladium(II); potassium carbonate; In water; toluene;Inert atmosphere; Reflux; | B) 3-(1-phenyl-1H-pyrazol-5-yl)-1-[3-(trifluoromethyl)phenyl]pyridin-4(1H)-one 3-Chloro-1-[3-(trifluoromethyl)phenyl]pyridin-4(1H)-one (0.0247 g), <strong>[1238702-58-3]1-phenyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole</strong> (0.0365 g), potassium carbonate (0.0249 g) and bis(di-tert-butyl(4-dimethylaminophenyl)phosphine)dichloropalladium(II) (0.0032 g) were suspended in toluene (1 mL) and water (0.1 mL), and the suspension was heated under reflux for 22 hr under an argon atmosphere. To the reaction mixture were added <strong>[1238702-58-3]1-phenyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole</strong> (0.0365 g) and potassium carbonate (0.0249 g) at room temperature, and the mixture was heated under reflux for 1 day under an argon atmosphere. The reaction mixture was cooled to room temperature, diluted with aqueous sodium hydrogen carbonate solution, extracted with ethyl acetate, dried over anhydrous sodium sulfate, filtered, concentrated, and purified by NH silica gel column chromatography (ethyl acetate/hexane) to give the title compound (1.2 mg). MS (ESI+): [M+H]+ 382.3. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
0.119 g | With bis(di-tert-?butyl(4-?dimethylaminophenyl)?phosphine)?dichloropalladium(II); potassium carbonate; In water; toluene; for 20h;Reflux; Inert atmosphere; | B) 1-(cyclopropylmethyl)-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one 3-Chloro-1-(cyclopropylmethyl)-5-methoxypyridazin-4(1H)-one (0.133 g), <strong>[1238702-58-3]1-phenyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole</strong> (0.200 g), potassium carbonate (0.171 g) and bis(di-tert-butyl(4-dimethylaminophenyl)phosphine)dichloropalladium(II) (0.0219 g) were suspended in toluene (3.09 mL) and water (0.309 mL), and the suspension was heated under reflux for 20 hr under an argon atmosphere. The reaction mixture was cooled to room temperature, diluted with water, saturated aqueous sodium hydrogen carbonate solution and saturated brine, extracted with ethyl acetate, dried over anhydrous sodium sulfate, filtered, concentrated, purified by NH silica gel column chromatography (ethyl acetate/hexane?methanol/ethyl acetate) and recrystallized from ethyl acetate/hexane to give the title compound (0.119 g). MS (ESI+): [M+H]+ 323.3. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
76% | General procedure: To a stirred solution of commercially available l-(4-fluorophenyl)-lH-pyrazole [CAS No 81329-32-0] (2.27 g, 14.0 mmol) in THF (100 ml) was added drop wise at -78 C under argon atmosphere n-butyl lithium (1.6N in hexane, 10.5 ml, 16.8 mmol. The reaction mixture was allowed to stir for 1 h at -78 C. Afterwards commercially available 2-isopropoxy-4,4,5,5- tetramethyl-l,3,2-dioxaborolane (2.84 g, 3.12 ml, 15.0 mmol) was added drop wise at -78 C, and the mixture was stirred for 1.5 h at -78 C. The mixture was allowed to reach room temperature within 1 h, and acetic acid (0.925 g, 881 mu, 15.4 mmol) was added. The mixture was filtered using a Celite pad, which was washed with ethyl acetate, and the filtrate was evaporated to dryness. The crude product (4.36 g, light brown solid) was purified by flash chromatography on silica gel (heptane/ethyl acetate, 10-50 %) to yield the title compound as an off-white solid (2.04 g, 51 %), MS (ISP) m/z = 289.5 [(M+H)+], mp 133 C. |
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