posted on 2025-04-15, 20:05authored byMohamed
E. Moustafa, Paul D. Boyle, Richard J. Puddephatt
The reaction of PhCHBr2 with the cycloneophylplatinum
complex [Pt(CH2CMe2C6H4)(NN)], 1, NN = 4,4’-di-t-butyl-2,2’-bipyridine
(bubipy), gave the complex [PtBr2(CH2CMe2C6H4CHPh)(NN)], 2, which
is formed by formal oxidative insertion of benzylidene, PhCH, into
the arylplatinum bond of 1. By monitoring the reactions
by 1H NMR spectroscopy, intermediates were detected and
shown to be products of oxidative addition [PtBr(CHBrPh)(CH2CMe2C6H4CHPh)(NN)], 3, along with a side product [PtBr2(CH2CMe2C6H4)(NN)]. The formation of 2 gives the first example of selective benzylidene insertion reactions
into an aryl–platinum bond, with potential for applications
in catalysis.