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An efficient and clean synthesis of pyrido[2,3-d]pyrimidine-4,7-dione derivatives in aqueous media

✍ Scribed by Da-Qing Shi; Jing-Wen Shi; Shao-Feng Rong

Publisher
Journal of Heterocyclic Chemistry
Year
2009
Tongue
English
Weight
69 KB
Volume
46
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

magnified image A series of 2‐amino‐5‐aryl‐5,6‐dihydropyrido[2,3‐d]pyrimidine‐4,7(3__H__,8__H__)‐dione derivatives were synthesized via the three‐component reaction of aromatic aldehyde, 2,6‐diaminopyrimidine‐ 4(3__H__)‐one, and Meldrum's acid in water in the presence of triethylbenzylammonium chloride (TEBAC). This protocol has the advantages of easier work‐up, milder reaction conditions, and environmentally benign procedure. J. Heterocyclic Chem., (2009).

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