Enantioselective Diels-Alder Cycloadditions with β-Substituted Pyrazolidinone Propiolimides

被引：6

作者：

Sibi, Mukund P. ^{[1
]}

Cruz, Wilfredo, Jr. ^{[1
]}

Stanley, Levi M. ^{[1
]}

机构：

[1] N Dakota State Univ, Dept Chem & Mol Biol, Fargo, ND 58105 USA

来源：

SYNLETT | 2010年 / 06期

关键词：

Diels-Alder cycloaddition; acetylenic dienophile; enantioselective; pyrazolidinone; chiral Lewis acid; LEWIS-ACID CATALYSTS; CHIRAL RELAY; LIGANDS; CYCLOPENTADIENE; TEMPLATES; OLEFINS; EXO;

D O I：

10.1055/s-0029-1219538

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Chiral Lewis acid catalyzed Diels-Alder cycloadditions between beta-substituted pyrazolidinone propiolimides and cyclic dienes have been studied. A catalyst prepared from Sc(OTf)(3) and t-Bu-pybox ligand promotes the formation of enantioenriched diene cycloadducts in moderate to high yield and good enantioselectivity from the reactions of acetylenic dienophiles and cyclic dienes.

引用

页码：889 / 892

页数：4

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