A Novel Highly Effective Second-generation Grubbs Pre-catalyst for the Ring-closing Metathesis

A novel ruthenium carbene complex [Cl2(Cy3P)(4-Me3Si-IPr)Ru=CHPh] 1, in which the IPr [1,3-bis(2,6-diisopropylphenyl)-2H-imidazol-2-ylidene] ligand is modified via the introduction of the electropositive Me3Si-group at the 4-position of the N-heterocyclic carbene (NHC) backbone, was synthesized and...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the Japan Petroleum Institute 2023/01/01, Vol.66(1), pp.23-26
Main Authors: YAMANE, Momo, SEO, Yuto, PUTRO, Wahyu S., FARIED, Miftah, LEE, Vladimir Ya, MIZUSAKI, Tomoteru, TAKAGI, Yukio, MATSUMOTO, Kazuhiro, CHOI, Jun-Chul, FUKAYA, Norihisa
Format: Article
Language:English
Subjects:
Carbenes
Catalysts
Catalytic activity
Electropositivity
Grubbs catalyst
Metathesis
N-Heterocyclic carbene
Ruthenium
Silicon
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A novel ruthenium carbene complex [Cl2(Cy3P)(4-Me3Si-IPr)Ru=CHPh] 1, in which the IPr [1,3-bis(2,6-diisopropylphenyl)-2H-imidazol-2-ylidene] ligand is modified via the introduction of the electropositive Me3Si-group at the 4-position of the N-heterocyclic carbene (NHC) backbone, was synthesized and spectroscopically charac-terized. This type of second-generation Grubbs pre-catalyst 1 showed excellent catalytic activity for the ring-closing metathesis of diethyldiallylmalonate, with notably better activity compared to the commercially available first-generation Grubbs pre-catalyst [Cl2(Cy3P)2Ru=CHPh] and comparable activity to the second-generation Grubbs pre-catalyst [Cl2(Cy3P)(IPr)Ru=CHPh].
ISSN:1346-8804
1349-273X
DOI:10.1627/jpi.66.23