Synlett 2015; 26(04): 525-530
DOI: 10.1055/s-0034-1379881
letter
© Georg Thieme Verlag Stuttgart · New York

Cocamidopropyl Betaine Catalyzed Benzoin Condensation and Pseudo-Four-Component Reaction of the in Situ Formed Benzoin in Water

Fatemeh Tamaddon*
Department of Chemistry, Yazd University, Yazd 89195-741, Iran   eMail: ftamaddon@yazd.ac.ir
,
Masoomeh Alizadeh
Department of Chemistry, Yazd University, Yazd 89195-741, Iran   eMail: ftamaddon@yazd.ac.ir
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Publikationsverlauf

Received: 26. Oktober 2014

Accepted after revision: 15. November 2014

Publikationsdatum:
13. Januar 2015 (online)


Abstract

An improved synthesis of benzoins, as key synthetic building blocks, and substituted pyrroles in micelle medium using a very small amount of cocamidopropyl betaine in water is described. In this one-pot strategy, benzoin condensation of aldehydes and further pseudo-four-component reaction of the in situ formed benzoin with 1,3-dicarbonyls, and ammonium acetate gave excellent yields of the desired pyrrole products.