Carbon–carbon σ-bond cleavage in α-hydroxyalkynes on reaction with dodecacarbonyl-triosmium and -triruthenium

Abstract

A carbon–carbon σ-bond is cleaved in the reaction of the diols HOCR₂CCCR₂OH (R = Me or Ph) with the osmium or ruthenium carbonyls [M₃(CO)₁₂] to give [HM₃(CO)₉(CCR₂OH)], a reaction which appears to be generally applicable to α-hydroxyalkynes not containing an α-hydrogen atom.