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PROCESS FOR THE PREPARATION OF 2-(2-AMINOTHIAZOLE-4-YL)-2-(SYN)-METHOXYIMINOACETIC ACID ESTERS
PROCESS FOR THE PREPARATION OF 2-(2-AMINOTHIAZOLE-4-YL)-2-(SYN)-METHOXYIMINOACETIC ACID ESTERS
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机译:制备2-(2-氨基噻唑-4-基)-2-(SYN)-甲氧基亚甲基乙酸酯的方法
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摘要
Process for the production of 2-(2-aminothiazole-4-yl)-2-(syn)-methoxyimino acetic ester. First 4-chloroacetoacetic ester is oximized and then the resultant chlorohydroxyimino ester, in solution form, reacted with thiourea to produce 2-(2-aminothiazole-4-yl)-2-(syn)-hydroxyimino acetic ester. The latter is methylated with dimethyl sulfate using phase transfer catalysis.
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