Organic letters

Palladium-catalyzed direct benzylation of azoles with benzyl carbonates

T Mukai, K Hirano, T Satoh, M Miura

Index: Mukai, Tomoya; Hirano, Koji; Satoh, Tetsuya; Miura, Masahiro Organic Letters, 2010 , vol. 12, # 6 p. 1360 - 1363

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Citation Number: 89

Abstract

The direct aromatic sp2 C− H benzylation of azole compounds with benzyl carbonates proceeds efficiently in the presence of a Pd2 (dba) 3/dppp catalyst system and NaOAc as a base to afford the corresponding diarylmethanes in good yields. In addition, the same palladium catalyst enables the direct benzylic sp3 C− H benzylation with the second benzyl carbonates without employing any external base.