Practical synthesis of Ambrox® from farnesyl acetate involving lipase catalyzed resolution
摘要:
Enantiomerically pure Ambrox(R) was synthesized from (-)-13,14,15,16-tetranor-8 alpha,12-labdanediol, which was prepared by lipase catalyzed kinetic resolution of (+/-)drimane- 8,11-diol. Copyright (C) 1996 Elsevier Science Ltd
Process for the Preparation of (3E, 7E)-Homofarnesol
申请人:BASF SE
公开号:US20130273619A1
公开(公告)日:2013-10-17
The present invention relates to new types of processes for the improved preparation of homofarnesol, in particular of (3E,7E)-homofarnesol and homofarnesol preparations with an increased content of (3E,7E)-homofarnesol (also referred to as all E-homofarnesol).
[EN] PREPARATION OF HOMOALLYLIC COMPOUNDS BY REACTION OF CYCLOPROPYLVINYL PRECURSORS WITH BRONSTEDT ACIDS<br/>[FR] PRÉPARATION DE COMPOSÉS HOMOALLYLIQUES PAR RÉACTION DE PRÉCURSEURS CYCLOPROPYLVINYLIQUES AVEC DES ACIDES DE BRÖNSTED
申请人:GIVAUDAN SA
公开号:WO2015059293A1
公开(公告)日:2015-04-30
A method of forming homoallylic compounds 2 from cyclopropylvinyl precursors 1 in the presence of a Bronsted acid HQ.
Total synthesis of (+/-)-thallusin was achieved using Hg(OTf)(2)-PhNMe2-induced olefin cyclization, and Suzuki coupling with a pyridyllboronic acid derivative. Hg(OTf)(2) also acted as a catalyst to isomerize the double bond into the more thermodynamically stable isomer when treated in toluene. Synthetic (+/-)-thallusin as well as an analogue showed morphogenesis-inducing activity. (c) 2007 Elsevier Ltd. All rights reserved.