Preparation of Alkanechalcogenolate- and Benzenechalcogenolate-Bridged Diruthenium Complexes and Their Catalytic Activity toward Propargylation of Acetone with Propargylic Alcohol

Various alkanechalcogenolate (SR, SeR, TeR)-
and benzenechalcogenolate (SPh, SePh, TePh)-bridged
diruthenium complexes have been newly prepared, and
their catalytic activity toward the propargylation of
acetone with propargylic alcohol has been investigated
for comparison. Ab initio molecular orbital calculations
of syn and anti methanechalcogenolate-bridged, propane-2-selenolate-bridged, and benzenethiolate-bridged diruthenium complexes have been carried out to explain the
reason for favorable formation of either isomer.