Water → Boma

반응식

Br[CH2:2][C:3]1[CH:8]=[CH:7][C:6]([C:9]2[O:10][C:11]3[CH:17]=[CH:16][CH:15]=[CH:14][C:12]=3[N:13]=2)=[CH:5][C:4]=1[O:18][CH3:19].O.[C-:21]#[N:22].[Na+]>CN(C)C=O>[O:10]1[C:11]2[CH:17]=[CH:16][CH:15]=[CH:14][C:12]=2[N:13]=[C:9]1[C:6]1[CH:7]=[CH:8][C:3]([CH2:2][C:21]#[N:22])=[C:4]([O:18][CH3:19])[CH:5]=1

참가 물질

실험 절차

A mixture of, 2-[4-(bromomethyl)-3-methoxyphenyl]-1,3-benzoxazole (318 mg, 1 mmol), dimethylformamide (7.5 mL) and deionzed water (2.5 mL) was stirred at rt. Sodium cyanide (150 mg, 3.0 mmol) was added to reaction. After 3 h, dimethylformamide (10 mL) was added to help dissolve solids in reaction mixture. Let reaction mixture stir overnight at rt. Workup was done by washing reaction with brine (3×30 mL), extraction with EtOAc, combined organic extracts, dried (Na2SO4), filtered and removed solvent in vacuo. Flash chromatography of resulting orange solid on silica gel using a gradient elution of 1:9 EtOAc:hexanes to 1:3 EtOAc:hexanes afforded the desired intermediate, [4-(1,3-benzoxazol-2-yl)-2-methoxyphenyl]acetonitrile, as a light yellow solid.