Tetrahedron Letters

Superbase-promoted direct N-carbonylation of pyrrole with carbonic acid diesters

M Carafa, M Distaso, V Mele, F Trani, E Quaranta

Index: Carafa, Marianna; Distaso, Monica; Mele, Valentina; Trani, Francesca; Quaranta, Eugenio Tetrahedron Letters, 2008 , vol. 49, # 22 p. 3691 - 3696

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Citation Number: 14

Abstract

Carbonic acid diesters have been investigated as carbonylating agents in the direct reaction with pyrrole (HetNH). In the presence of superbases (DBU, P1-t-Bu, BTPP) as catalysts, the heteroaromatic substrate can be N-carbonylated by direct reaction with carbonic acid ...