反应详情

By the method of Example 1, Step F, 2.70 g (0.012 mole) of 7-amino-4-chloro-2,3-dihydro-2,2-dimethylbenzofuran-3-one was reacted with 2.37 g (0.012 mole) of trichloromethyl chloroformate in toluene, yielding 2.85 g of 4-chloro-2,3-dihydro-2,2-dimethylbenzofuran-3-on-7-yl isocyanate.