CATALYTIC DEHYDROXYLATION OF DIOLS AND POLYOLS

摘要

Secondary alcohols, specifically diols and polyols, are dehydroxylated to th e corresponding primary alcohols using hydrogen in the presence of a ruthenium - containing catalyst precursor having the formula {[CpRu(CO)2]2(.mu.-H+Q- o r {[CpRu(CO)(PR'3)]2(.mu.-H+Q- or {[ZRu(L)]2(.mu.-H)+Q-; wherein Q- is a non - coordinating or weakly coordinating nonreactive anion; Cp is an optionally substituted cyclopentadienyl group; R' is selected from hydrogen, alkyl, ary l and aryloxy; Z is hydridotris(3,5-dimenthylpyrazolyl)borate or hydrocarbyl hydridotris (3,5-dimethylpyrazolyl)borate; and L is (CO)2 or 1,5- cyclooctadiene.