反应详情

A stirred mixture of 2-methyl-5-hydroxy-6,7-dichloro-1-indanone (27.6 g., 0.12 mole), potassium carbonate (24.9 g., 0.18 mole) and benzyl bromide (21.4 ml., 0.18 mole) in dimethylformamide (100 ml.) is warmed at 55°-60° C. for 2 hrs., then poured into water (1 l.) to precipitate 35.5 g. of 2-methyl-5-benzyloxy-6,7-dichloro-1-indanone which melts at 153°-155° C. after crystallization from benzene:hexane, 3:2.

1. temperatureis warmed at 55°-60° C. for 2 hrs
2. customto precipitate 35.5 g
3. customof 2-methyl-5-benzyloxy-6,7-dichloro-1-indanone which melts at 153°-155° C. after crystallization from benzene