Photogeneration of a Phosphonium Alkylidene Olefin Metathesis Catalyst

被引：22

作者：

Khalimon, Andrey Y. ^{[1
]}

Leitao, Erin M. ^{[1
]}

Piers, Warren E. ^{[1
]}

机构：

[1] Univ Calgary, Dept Chem, Calgary, AB T2N 1N4, Canada

来源：

ORGANOMETALLICS | 2012年 / 31卷 / 15期

基金：

加拿大自然科学与工程研究理事会;

关键词：

HETEROCYCLIC CARBENE LIGANDS; LATENT; COMPLEXES; POLYMERIZATION; RELEVANT; RUTHENACYCLOBUTANE; INITIATORS; PHOSPHINE; DESIGN;

D O I：

10.1021/om3005965

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Treatment of ruthenium carbide (H(2)IMes)-(Cl)(2)(PCy3)RuC (1) with the photoacid generator (PAG) [Ph3S][OTf] (3) under 254 nm light results in a highly efficient catalyst for ring-closing metathesis (RCM) and ring-opening metathesis polymerization (ROMP) reactions. The reactions proceed via formation of the ruthenium phosphonium alkylidene complex [(H(2)IMes)(Cl)(2)Ru=C(H)PCy3]-[OTf] as the active catalytic species. In the case of ROMP of cycloalkenes, reactions do not require addition of PAG and protonation of 1 proceeds via allylic C-H bond activation of the substrate under UV light.

引用

页码：5634 / 5637

页数：4

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