NYTT FOERFARANDE FOER FRAMSTAELLNING AV 2-(2-AMINOTIAZOL-4-YL)GLYOXYLSYRADERIVAT ELLER DESS SALTER,FOERFARANDET ANVAENDBARA MELLANPRODUKTER OCH FOERFARANDE FOER FRAMSTAELLNING AV DESSA MELLANPRODUKT

摘要

This invention relates to a novel process for producing a 2-(2-aminothiazol-4-yl)glyoxylic acid derivative or a salt thereof which are useful in producing a cephalosporin antibiotic, and to intermediates for said derivative and salt and a process for producing the intermediates.