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One-pot synthesis of 3,4-dihydropyrimidin-2(1H)-ones using boric acid as catalyst

✍ Scribed by Shujang Tu; Fang Fang; Chunbao Miao; Hong Jiang; Youjian Feng; Daqing Shi; Xiangshan Wang

Publisher
Elsevier Science
Year
2003
Tongue
French
Weight
93 KB
Volume
44
Category
Article
ISSN
0040-4039

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✦ Synopsis

A simple effective synthesis of 3,4-dihydropyrimidin-2(1H)-one derivatives, using boric acid as catalyst, from aromatic aldehydes, 1,3-dicarbonyl compounds and urea in glacial acetic acid is described. Compared with the classical Biginelli reaction conditions, this new method has the advantage of excellent yields (86-97%) and short reaction time (0.5-2 h).

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