反应详情

2-(2-Aminothiazol-4-yl)-2-(2-chloroethoxyimino)acetic acid (syn isomer, 15 g.), acetic anhydride (24.5 g.), formic acid (11.0 g.) and tetrahydrofuran (50 ml.) were treated in a similar manner to that of Example F-(5) to give 2-(2-formamidothiazol-4-yl)-2-(2-chloroethoxyimino)acetic acid (syn isomer, 13.4 g.), mp 155° C. (dec.).