Hypervalent iodine promoted transformation of 4H-chromenes into dihydrofurans and 2H-chromenes

被引：4
|
作者：
Kale, Ashok [1 ,2 ]
Medishetti, Nagaraju [1 ,2 ]
Nanubolu, Jagadeesh Babu [2 ,3 ]
Atmakur, Krishnaiah [1 ,2 ]
机构：
[1] CSIR Indian Inst Chem Technol, Fluoro & Agro Chem Dept, Hyderabad, India
[2] CSIR Indian Inst Chem Technol, Acad Sci & Innovat Res, Hyderabad, India
[3] CSIR Indian Inst Chem Technol, Lab Xray Crystallog, Hyderabad, India
来源：
SYNTHETIC COMMUNICATIONS | 2020年 / 50卷 / 21期
关键词：
1; 3-Diones; hypervalent iodine; 2H-chromenes; 4H-chromenes; dihydrofurans; DERIVATIVES; DESIGN; CONSTRUCTION; CYCLIZATION;
D O I：
10.1080/00397911.2020.1799013
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
A novel protocol to synthetic transformation of 4H-chromenes into dihydrofurans (3) and 2H-chromenes (11) promoted by hypervalent iodine has been accomplished in a one-pot reaction at ambient temperature. Dihydrofurans are exclusively formed under basic reaction conditions, whereas, 2H-chromenes are the products under acidic condition. Simple reaction conditions with a broad substrate scope inclusive of various heterocycles and high yields are the attractive features of this protocol.
引用
收藏
页码：3264 / 3275
页数：12
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