Reactivity study of low-coordinate phosphaalkene IMesPPh with Grubbs first-generation ruthenium benzylidene complexes†
Abstract
Reaction of IMesPPh with RuCl2L2(CHPh) (L = PPh3 and PCy3) gave complexes with selectivity that is dependent on the metal precursor used. RuCl2(IMesPPh)(PPh3)(CHPh), which adopts the rare cis chloride configuration, was inactive in ring-opening metathesis of diallyl sulfide. In contrast, the PCy3 analogue could not be isolated, and in fact led to an unusual decomposition product with two C–H activations.