Catalytic Asymmetric Inverse-Electron-Demand (IED) [4+2] Cycloaddition of Salicylaldimines: Preparation of Optically Active 4-Aminobenzopyran Derivatives

被引:49
作者
Bernardi, Luca [1 ]
Comes-Franchini, Mauro [1 ]
Fochi, Mariafrancesca [1 ]
Leo, Virginia [1 ]
Mazzanti, Andrea [1 ]
Ricci, Alfredo [1 ]
机构
[1] Univ Bologna, Dept Organ Chem A Mangini, I-40136 Bologna, Italy
关键词
asymmetric synthesis; cycloaddition; electron-rich alkenes; fused-ring systems; organic catalysis; CHIRAL BRONSTED ACID; DIELS-ALDER REACTIONS; ENE-TYPE REACTION; CIS-FUSED PYRANO; DIASTEREOSELECTIVE SYNTHESIS; ANTIHYPERTENSIVE ACTIVITY; ABSOLUTE-CONFIGURATIONS; CIRCULAR-DICHROISM; NATURAL-PRODUCTS; PHOSPHORIC-ACID;
D O I
10.1002/adsc.201000608
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
The catalytic asymmetric inverse-electron-demand (IED) [4+2] cycloaddition of various salicylaldehyde-derived N-arylimines with electron-rich alkenes in the presence of chiral BINOL-derived phosphoric acid catalysts has been studied with the aim of obtaining optically active 4-aminobenzopyran derivatives. Dienophiles such as 2,3-dihydro-2H-furan, benzyl N-vinylcarbamate and 2-vinylindole have been employed.
引用
收藏
页码:3399 / 3406
页数:8
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