Process for the preparation of ketones by ozonolysis
申请人:Nobis Markus
公开号:US20060224019A1
公开(公告)日:2006-10-05
The invention relates to a process for the preparation of a ketone from a tertiary alcohol having a double bond in the alpha position, that includes the step of contacting tertiary alcohol having a double bond in the alpha position with ozone in the presence of an inorganic base under ketone-forming reaction conditions.
Ambraketal 7 and epiambraketal 8 are synthesized efficientlyfromsclareol 1. The key intermediate 5 is obtained by a regioselective elimination of ketoacetate 4 resulting from the side chain oxidative degradation of 1 by ruthenium tetroxide generated .