Efficient synthesis of 2H-chromene derivatives via a dual-organocatalytic reaction

被引：6
|
作者：
Somprasong, Siriphong [1 ,2 ]
Prasitwatcharakorn, Watcharapon [1 ,2 ]
Luanphaisarnnont, Torsak [1 ,2 ]
机构：
[1] Mahidol Univ, Fac Sci, Dept Chem, Bangkok 10400, Thailand
[2] Mahidol Univ, Fac Sci, Ctr Excellence Innovat Chem, Bangkok 10400, Thailand
来源：
TETRAHEDRON LETTERS | 2020年 / 61卷 / 42期
关键词：
2H-Chromenes; Catalysis; p-Toluenesulfonic acid; Pyrrolidine; Regioselective synthesis; FUNCTIONALIZED; 2H-CHROMENES; 4+2 CYCLOADDITION; SALICYLALDEHYDES; CYCLOCONDENSATION; 2H-1-BENZOPYRANS; NANOPARTICLES; CHROMENES; ALDEHYDES; CATALYST;
D O I：
10.1016/j.tetlet.2020.152402
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
An efficient synthetic method was developed for the selective construction of 2H-chromene derivatives from various salicylaldehydes and acetylenic diesters using a dual catalyst system (p-toluenesulfonic acid monohydrate and pyrrolidine). The advantages of this transformation include high selectivity, good functional group tolerance, operational simplicity, and mild reaction conditions. (C) 2020 Elsevier Ltd. All rights reserved.
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页数：4
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