反应详情

3.0 g of 1E was added to a stirred solution of 75 ml of 12.5% phosgene in benzene. The resulting mixture was stirred for 2 hours at room temperature, then the solvent was evaporated to give 1-(chlorocarbonyl)-1-(2,3-dihydro-2-methylbenzofuran-7-yl)-4-methoxy-4-methylsemicarbazide (1F), as an amber syrup.

1. customthe solvent was evaporated