Intramolecular C−H Activation of a Bisphenolate(benzene)-Ligated Titanium Dibenzyl Complex. Competing Pathways Involving α-Hydrogen Abstraction and σ-Bond Metathesis
作者:Suzanne R. Golisz、Jay A. Labinger、John E. Bercaw
DOI:10.1021/om100253u
日期:2010.11.8
to undergo thermaldecomposition to give toluene and a cyclometalated dimeric complex. The thermaldecomposition followed first-order kinetics and was studied at a number of temperatures to determine the activation parameters (ΔH⧧= 27.2(5) kcal/mol and ΔS⧧ = −6.2(14) cal/(mol K)). Deuterated isotopologues were synthesized to measure the kinetic isotopeeffects. The complexes with deuterium in the benzyl