| 摘要 |
The object of the present invention is a process for the preparation of alcohols by reduction of the carbonyl function in substrates belonging to the class of aldehydes, ketones, esters or lactones, which substrates may contain unsaturated functions other than carbonyl, comprising: a) the reaction of the carbonyl substrate with stoichiometric amounts of a silane in the presence of catalytic amounts of an active zinc compound which is monomeric and not a hydride, b) the hydrolysis of the thus-obtained siloxane with a basic agent, and c) the separation and purification, if necessary, of the thus-obtained alcohol. The catalytically active compound is generally obtained by the reaction of an oligomeric or polymeric precursor compound of zinc with a complexing agent. |
