反应详情

A solution of 2 parts by weight of methoxycarbonylisocyanate in 15 parts by weight of methylene chloride was added gradually with stirring to a solution, at room temperature, of 4 parts by weight of 2-amino-5-chloro-4-methylbenzothiazole in 75 parts by weight of methylene chloride and 50 parts by weight of tetrahydrofuran. After stirring the reaction mixture at room temprature overnight, a product was isolated by filtration giving a 40% yield of methyl 4-(5-chloro-4-methylbenzothiazol-2-yl)allophanate having a melting point greater than 275° .

1. customa product was isolated by filtration