Elsevier

Tetrahedron Letters

Volume 46, Issue 48, 28 November 2005, Pages 8329-8331
Tetrahedron Letters

Boric acid: a novel and safe catalyst for aza-Michael reactions in water

https://doi.org/10.1016/j.tetlet.2005.09.167Get rights and content

Abstract

Boric acid efficiently catalyzes the conjugate addition of aliphatic amines to α,β-unsaturated compounds to produce β-amino compounds, with great alacrity and excellent yields, in water under mild conditions. Aromatic amines do not participate effectively in the reaction.

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Acknowledgement

S.H. and V.N. thank the Council of Scientific and Industrial Research, New Delhi, India, for research fellowships.

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