2440-94-0Relevant articles and documents
ACTIVATION OF A CARBOXY GROUP BY DIALKYL PYROCARBONATES. SYNTHESIS OF SYMMETRICAL ANHYDRIDES AND ARYL ESTERS OF N-PROTECTED AMINO ACIDS USING DI-tert-BUTYL PYROCARBONATE AS CONDENSING REAGENT
Pozdnev, V. F.,Chernaya, M. Yu.
, p. 333 - 337 (2007/10/02)
It has been shown that di-tert-butyl pyrocarbonate can be used as a condensing reagent in the production of anhydrides and some aryl esters of carboxylic acids.The synthesis of anhydrides and of phenyl, p-nitrophenyl, β-naphtyl, and quinolin-8-yl esters of N-protected amino acids is described.
Process for the preparation of a carboxylic acid ester
-
, (2008/06/13)
An improved and novel process for the preparation of a carboxylic acid ester which comprises reacting a carboxylic acid with an alcohol or a sulfenic acid ester thereof in the presence of a tertiary phosphine and a disulfide of a mercaptoheterocyclic compound containing a nitrogen-carbon double bond with which the disulfide linkage is conjugated.