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3-[(3-(Trimethoxysilyl)propyl)thio]propane-1-oxy-sulfonic acid: An efficient recyclable heterogeneous catalyst for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones

✍ Scribed by Jetti, Srinivasa Rao; Verma, Divya; Jain, Shubha


Book ID
121930159
Publisher
Elsevier
Year
2017
Tongue
English
Weight
748 KB
Volume
10
Category
Article
ISSN
1878-5352

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## 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 conditi