✦ LIBER ✦

An efficient one-pot synthesis of 5-aryl substituted 2-amino-5,8-dihydropyrido[2,3-D] pyrimidin-4,7-diones under microwave irradiationl without catalyst

✍ Scribed by Shujiang Tu; Qian Wang; Jianing Xu; Xiaotong Zhu; Jinpeng Zhang; Bo Jiang; Runhong Jia; Yan Zhang; Junyong Zhang

Publisher: Journal of Heterocyclic Chemistry
Year: 2006
Tongue: English
Weight: 70 KB
Volume: 43
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570430407

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✦ Synopsis

Abstract

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A series of 5‐aryl substituted 2‐amino‐5,8‐dihydropyrido[2,3‐d]pyrimidin‐4,7‐diones were synthesized through one‐pot condensation of 2,6‐diaminopyrimidin‐4‐one, aldehyde and Meldrum's acid using glycol as energy transfer agent under microwave irradiation without catalyst. The one‐pot protocol in the absence of catalyst has the advantage of good yield (86‐95%), short route and reaction time (3‐6 min) and environmentally friendly.

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