Abstract
[reaction: see text] A series of 4-amino-1H-pyrrole-2-carboxylic acid benzyl esters has been synthesized in 61-84% yields on treatment of N-PhF-4-oxoproline benzyl ester and its 3-alkyl-substituted derivatives with different primary and secondary amines and a catalytic amount of TsOH in THF. 4-Hydroxy-1H-pyrrole-2-carboxylic acid benzyl esters were prepared in 59 and 70% yields by treatment of N-PhF-4-oxoproline benzyl esters with ammonium hydroxide in THF.
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