反应详情

By substantially following the procedure of Example 115b using 16.8 g (73 mmole) of 2-dimethylamino-4'-difluoromethoxy-acetophenone Example 126c and 7.6 g (81 mmole) of methyl chloroformate one obtain 12 g of 2-(N-methyl-N-(methoxycarbonyl)amino)-4'-difluoromethoxyacetophenone an oil. bp 150°-190° C. at 0.7 torr.