X-RAY-ANALYSIS OF PYRROLIZIDINES SYNTHESIZED BY DIASTEREOSELECTIVE ALPHA-CYCLIZATION OF CAPTODATIVE OR PUSH-PULL ENAMINES WITH DIMETHYL ACETYLENEDICARBOXYLATE

被引：0

作者：

TINANT, B ^{[1
]}

FENEAUDUPONT, J ^{[1
]}

DECLERCQ, JP ^{[1
]}

DEBOECK, B ^{[1
]}

JIANG, S ^{[1
]}

JANOUSEK, Z ^{[1
]}

VIEHE, HG ^{[1
]}

机构：

[1] UNIV CATHOLIQUE LOUVAIN,CHIM ORGAN LAB,B-1348 LOUVAIN,BELGIUM

来源：

BULLETIN DES SOCIETES CHIMIQUES BELGES | 1995年 / 104卷 / 06期

关键词：

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The title reactions lead to unique diastereoisomers of pyrrolizidines 1a [dimethyl 2,3-dehydro-1-methyl-3-cyanopyrrolizidine-1,2-dicarboxylate] or 1b [dimethyl 2,3-dehydro-1-(ethoxycarbonylmethyl)1-3-phenyl-pyrrolizidine-1,2-dicarboxylate] with relative stereochemistry (1a: trans; 1b: cis) established by X-ray diffraction analysis. The heterocycle adopts a different conformation in 1a and 1b.

引用

页码：397 / 400

页数：4

共 7 条

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