反应详情

93 g (0.32 mole) of ethyl 4-bromo-2-n-butoxyimino-acetoacetate and 24 g (0.32 mole) of thiourea undergo a condensation reaction analogously to Example 4, stage 3, to give 35.2 g of ethyl 2-(2-aminothiazol-4-yl)-2-n-butoxyimino-acetate of melting point 129.5°-131°.

1. customa condensation reaction analogously to Example 4, stage 3