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Three Component Reaction: An Efficient Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones and Thiones Using Heterogeneous Catalyst

✍ Scribed by Vinod Tribhuvannathji Kamble; Dnyanoba Baburao Muley; Sandeep Tukaram Atkore; Sharad Digambarrao Dakore

Publisher: John Wiley and Sons
Year: 2010
Tongue: English
Weight: 60 KB
Volume: 28
Category: Article
ISSN: 0256-7660
DOI: 10.1002/cjoc.201090084

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✦ Synopsis

Abstract

Fluoroboric acid supported on silica gel (HBF~4~‐SiO~2~) catalyzes efficiently the three component condensation of an aldehyde, a 1,3‐dicarbonyl compound and urea or thiourea to afford the corresponding 3,4‐dihydropyrimidin‐ 2(1__H__)‐ones and thiones in high yields. The ambient conditions, fast reaction rates, and excellent product yields are the important characteristics of this reaction.

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