Coupling of alkynyl(2,4,6-tri-tert-butylphenyl)phosphanes with cuprous chloride

被引：0

作者：

Markl, G

Hennig, R

机构：

来源：

LIEBIGS ANNALEN-RECUEIL | 1996年 / 12期

关键词：

diphosphanes; hetero Cope rearrangement; cuprous chloride; alkynylphosphanes; low-coordinated phosphorus compounds;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Coupling of alkynyl(2,4,6-tri-tert-butylphenyl)phosphanes 2 with n-butyllithium and cuprous chloride gives 3,4-diphospha-1,5-hexadiynes 3 or cuprous chloride complexes 8 of 3,4-bis(phosphinidene)cyclobutenes 5, depending on the bulkiness of the substituent at the triple bond. The exclusive formation of racemic 3,4-diphospha-1,5-hexadiynes 3, which was proven by P-31- and C-13-NMR spectroscopy, explains the stereoselective rearrangement to only symmetrical cyclobutenes 5.

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页码：2059 / 2064

页数：6

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