M. Adib, B. Mohammadi, Ehsan Sheikhi
Mar 1, 2011
Citations
0
Influential Citations
17
Citations
Journal
Chinese Chemical Letters
Abstract
Abstract An efficient 1-methylimidazole-catalyzed synthesis of dialkyl 2-[(4-methylphenyl)sulfonyl]-1 H -pyrrole-3,4-dicarboxylates is described. The reactive 1:1 zwitterionic intermediate formed by the addition of 1-methylimidazole to dialkyl acetylenedicarboxylates is trapped by tosylmethyl isocyanide (TOSMIC) to afford the title compounds in excellent yields.