Beilstein J. Org. Chem.2015,11, 1732–1740, doi:10.3762/bjoc.11.189
reaction with sulfur affording the corresponding imidazolethiones under very mild conditions.
Keywords: imidazole; isoxazole; NHCcarbene; pyrrole-2-carboxylate; relay catalysis; Introduction
Pyrrole-2-carboxyate and imidazole units are present in bioactive pyrrole-imidazole alkaloids and pyrrole
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Graphical Abstract
Scheme 1:
The formation and possible tautomeric equilibria of 2-methoxycarbonyl- and 2-carboxy-3-(1H-imidazol...