Phospha-Claisen Type Reactions at Frustrated Lewis Pair Frameworks

被引：17

作者：

Chen, Guo-Qiang ^{[1
]}

Kehr, Gerald ^{[1
]}

Mueck-Lichtenfeld, Christian ^{[1
]}

Daniliuc, Constantin G. ^{[1
]}

Erker, Gerhard ^{[1
]}

机构：

[1] Inst Univ Munster, Organ Chem, Corrensstr 40, D-48149 Munster, Germany

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2016年 / 138卷 / 27期

基金：

欧洲研究理事会;

关键词：

METHYLENEPHOSPHONIUM ION; CRYSTAL-STRUCTURE; CHEMISTRY; ADDUCTS; VALENCE; BEARING; DESIGN;

D O I：

10.1021/jacs.6b04046

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The C-4-bridged unsaturated phosphane/borane frustrated Lewis pairs (P/B FLPs) 4 undergo borane induced phosphane addition to a variety of acetylenic esters or ketones to generate heterocyclic 10-membered intermediates that contain pairs of allyl phosphonium/allenic enolate functionalities. These subsequently undergo phospha-Claisen type rearrangement reactions to give the respective substituted phosphanyl pentadiene products. In two exceptional cases subsequent reactions leading to anomalous phospha-Claisen products were found. One example involved cyclopropane ring formation, and the other carbon carbon bond activation. Potential schemes leading to these products are discussed. Essential examples were characterized by X-ray diffraction.

引用

页码：8554 / 8559

页数：6

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