ON THE REVERSIBILITY OF METAL CARBENE FORMATION PROCESS IN OLEFIN METATHESIS REACTION OVER MoOx/β-TiO2CATALYST

Co-isomerization of d0- and d8-cis-2-butene was carried out on a novel catalyst, MoOx/β-TiO2(2.9>x>2.3), which is active for olefin metathesis reaction without inter- and intra-molecular hydrogen scrambling of olefins. The ratio, d4/(d0+d8), in produced trans-2-butene was found to be zero at the initial stage of the reaction, indicating a type of cis–trans isomerization by intra-molecular metathesis.