反应详情

To a stirred solution of 5-amino-2-methyl-2H-tetrazole (0.50 g, 5.05 mmol), pyridine (0.48 g, 6.06 mmol) and DMAP (0.06 g, 0.51 mmol) in dichloromethane (30 ml) was added at 0° C. diphenylacetyl chloride (1.16 g, 5.05 mmol). Stirring was continued at RT for 2 h, the reaction mixture was poured into sat. NaHCO3 solution (50 ml) and extracted with dichloromethane (3×50 ml). The combined organic layers were washed with brine (70 ml), dried (Na2SO4) and evaporated. The crude product was crystallized from ethyl acetate/hexane to give the title compound (0.83 g, 56%) as a white solid, m.p. 218° C. (dec.) and MS: m/e=293.1 (M+H+).

1. extractionextracted with dichloromethane (3×50 ml)
2. washThe combined organic layers were washed with brine (70 ml)
3. dry with materialdried (Na2SO4)
4. customevaporated
5. customThe crude product was crystallized from ethyl acetate/hexane