未找到相关数据
Reactions of complex ligands .72. Intermolecular Pauson-Khand reactions of ethyl 2-phenylethynylcyclopropanecarboxylates and [amino(trans-2-phenylethynylcyclopropyl)methylidene]pentacarbonylchromium(0)
被引：4
|作者：
Kretschik, O
Nieger, M
Dotz, KH
机构：
[1] UNIV CALIF LOS ANGELES,DEPT CHEM,LOS ANGELES,CA 90095
[2] UNIV BONN,INST ANORGAN CHEM,D-53121 BONN,GERMANY
来源：
CHEMISCHE BERICHTE-RECUEIL
|
1997年
/
130卷
/
04期
关键词：
carbene complexes;
chromium;
cycloadditions;
cyclopropanecarboxylic acid derivatives;
D O I：
10.1002/cber.19971300410
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The intermolecular Pauson-Khand reactions of ethyl trans-2-phenylethynylcyclopropanecarboxylate (1t) and [amino (trans-2-phenylethynylcyclopropyl)methylidene]pentacarbonylchromium (9) with norbornene lead to ester and metal carbene functionalized exo-tricyclodecenones 3-6 and 13-16, respectively, in moderate to high yields. The incorporation of the alkyne is moderately regioselective but less diastereoselective. Pairs of diastereomers are isolated after column chromatography, which can subsequently be separated by recrystallization. The minor diastereomer 3 and the major diastereomer 15 are characterized by X-ray structure analysis.
引用
收藏
页码：507 / 513
页数：7
相关论文