A Mild and Efficient Procedure for the Preparation of Chromone-2-carboxylates
A Mild and Efficient Procedure for the Preparation of Chromone-2-carboxylates作者机构：State Key Laboratory of Drug Research Shanghai Institute of Materia Medica Shanghai Institutes for Biological Sciences the Chinese Academy of Sciences Shanghai 201203
出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)
年 卷 期：2006年第17卷第8期
页 面：1005-1008页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学]
主 题：Chromone-2-carboxylates tea-butyl ethyl oxalate diethyl oxalate.
摘 要：A mild and efficient procedure to build up various chromone-2-carboxylates was developed. Condensation of diverse 2-hydroxyacetophones with tetr-butyl oxalate in the presence of sodium ethoxide could be accomplished rapidly under mild condition. Cyclodehydration was carried out to achieve chromone-2-carboxylates in one-pot with impressive yield. Advantages over conventional methods with diethyl oxalate were observed in yield and reaction time.
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