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
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.
Pozdnev, V. F.,Chernaya, M. Yu.
p. 333 - 337
(2007/10/02)
p-Amine-benzoyl-lysine-vasopressin and p-amino-phenylacetyl-oxytocin
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Geiger,Sturm,Siedel
p. 1223 - 1231
(2007/10/12)
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