Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1992-01-16
1994-10-25
Rizzo, Nicholas S.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
540221, 540225, 540227, 540314, C07D50106, C07D49912
Patent
active
053590570
ABSTRACT:
There is described a process for the manufacture of carboxylic acid amides by acylating amines with 2-benzothiazolyl thioesters of carboxylic acids, which process comprises reacting the amine in the form of an acid addition salt. This process is especially of great advantage when the amine is not particularly stable in the form of the free base, which is frequently the case especially with 7-aminocephalosporin derivatives. 7-Acylamino-cephalosporin derivatives can be manufactured in good yield and in high purity with the novel process.
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Furlenmeier Andre
Weiss Urs
Ciambrone Coletti Ellen
Gould George M.
Hoffmann-La Roche Inc.
Johnston George W.
Rizzo Nicholas S.
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