反应详情

To a solution of 1-trityl-1H-imidazole-4-carbaldehyde (10.0 g, 0.03 mol) in anhydrous THF (100 mL) was added dropwise methyl magnesium bromide (1.4 M in hexane, 52.8 mL, 0.075 mol) at 0° C. After the addition, the mixture was stirred at RT overnight. The reaction was quenched with sat. aq. NH4Cl (50 mL) and the mixture extracted with CH2Cl2 (3×50 mL). The organic layers were combined, washed with 1 N aq. NaOH (3×20 mL), water (3×20 mL) and brine (100 mL), dried over MgSO4 and evaporated. The residue was purified via column chromatography (silica gel, EtOAc/Petroleum ether 1:5) to yield the title compound (8.0 g, 75.0%) as a white solid.

1. additionAfter the addition
2. customThe reaction was quenched with sat. aq. NH4Cl (50 mL)
3. extractionthe mixture extracted with CH2Cl2 (3×50 mL)
4. washwashed with 1 N aq. NaOH (3×20 mL), water (3×20 mL) and brine (100 mL)
5. dry with materialdried over MgSO4
6. customevaporated
7. customThe residue was purified via column chromatography (silica gel, EtOAc/Petroleum ether 1:5)