Reactions of Mo(NAr)(CH-t-Bu)(CH2-t-Bu)2 with Alcohols To Give Metathesis Catalysts of the Type Mo(NAr)(CH-t-Bu)(CH2-t-Bu)(OR)

The reaction between Mo(NAr)(CH-t-Bu)(CH 2 -t-Bu) 2 and 1 equiv of an alcohol yields either Mo(NAr)(CH-t-Bu)(CH 2 -t-Bu)(OR) complexes or Mo(NAr)(CH 2 -t-Bu) 3 (OR) complexes, which evolve neopentane to yield the former. Preliminary experiments have shown that Mo(NAr)(CH-t-Bu)(CH 2 -t-Bu) 2 (OR) complexes are active for metathesis conversion of diallyl ether to dihydrofuran and ethylene.