Potassium Carbonate → 3-[4-(4-Cyano-phenyl)-pyrazol-1-ylmethyl]-benzoic acid methyl ester
Reaktionsgleichung
[CH3:1][O:2][C:3](=[O:17])[C:4]1[CH:9]=[CH:8][CH:7]=[C:6]([CH2:10][N:11]2[CH:15]=[C:14](Br)[CH:13]=[N:12]2)[CH:5]=1.[C:18]([C:20]1[CH:25]=[CH:24][C:23](B(O)O)=[CH:22][CH:21]=1)#[N:19].C(=O)([O-])[O-].[K+].[K+]>>[CH3:1][O:2][C:3](=[O:17])[C:4]1[CH:9]=[CH:8][CH:7]=[C:6]([CH2:10][N:11]2[CH:15]=[C:14]([C:23]3[CH:24]=[CH:25][C:20]([C:18]#[N:19])=[CH:21][CH:22]=3)[CH:13]=[N:12]2)[CH:5]=1Komponenten
4
Versuchsvorschrift
Charge a microwave vial with 3-(4-bromo-pyrazol-1-ylmethyl)-benzoic acid methyl ester (0.60 g, 2.00 mmol), 4-cyanophenylboronic acid (0.35 g, 2.40 mmol), potassium carbonate (0.50 g, 4.80 mmol) and tetrakistriphenylphosphine palladium (0) (0.23 g, 0.2 mmol). Flush the vessel with inert gas and seal. Dissolve the contents of the vial in 10 mL of a 4:1 dioxane-water mixture and microwave at 150° C. for 5 minutes. Dilute the reaction mixture with EtOAc, dry over sodium sulfate, filter and concentrate to give an oil. Purify the residue by flash chromatography using a gradient of 0-50% EtOAc/hexanes to afford 0.20 g, 32% yield of 3-[4-(4-cyano-phenyl)-pyrazol-1-ylmethyl]-benzoic acid methyl ester as a solid.