Site-Directed Anchoring of an N-Heterocyclic Carbene on a Dimetal Platform: Evaluation of a Pair of Diruthenium(I) Catalysts for Carbene-Transfer Reactions from Ethyl Diazoacetate
作者:Biswajit Saha、Tapas Ghatak、Arup Sinha、S. M. Wahidur Rahaman、Jitendra K. Bera
DOI:10.1021/om200142p
日期:2011.4.11
utilities of the BArF (tetrakis(3,5-bis(trifluoromethyl)phenyl)borate) salts of these compounds are evaluated toward carbene-transferreactionsfromethyldiazoacetate including aldehyde olefination, cyclopropanation, and X−H (X = O, N) insertions. 1-BArF is clearly shown to be the superior catalyst. DFT calculations are undertaken to understand the influence of NHC binding on the electronic structures of the