Process for synthesizing active esters of carboxylic acids, new

Details Process for synthesizing active esters of carboxylic acids, new Process for synthesizing active esters of carboxylic acids, new

1988-09-13

1990-01-02

Daus, Donald G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548475, 548542, 558270, 558272, C07D207404, C07D24918

Patent

active

048914304

ABSTRACT:
The invention relates to a new process for preparing active esters or carboyxlic acids, which consists in reacting a carboxylic acid, in the presence of an agent for binding hydrohalic acid, with a carbonate of formula: ##STR1## in which R.sup.1 denotes either a radical of formula ##STR2## in which R.sup.3 and R.sup.4, which may be identical or different, are not hydrogen atoms and denote organic radicals which may be substituted or unsubstituted and saturated or unsaturated, and may or may not be bound to a polymer, and which can be joined together to form a hetero-cyclic system with the nitrogen, atom,

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Chem. Abstr., vol. 105, 60309d abstracting JP 61 43144.
Chem. Abst., vol. 104, 168201f abstracting EP 167451 (1986).
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