Construction of Optically Active Spiroketal by Direct Aldol Reaction
作者:Hisanaka Ito、Chie Kawabe、Kazuo Iguchi
DOI:10.3987/com-05-s(t)61
日期:——
Novel preparation of symmetric spiroketal was developed by the use of direct aldol reaction of alpha-hydroxyacetophenone catalyzed by chiral dinuclear zinc catalyst. The spiroketal was obtained in excellent enantiomeric excess.
US3956408A
申请人:——
公开号:US3956408A
公开(公告)日:1976-05-11
Combining two-directional synthesis and tandem reactions: a short formal synthesis of halichlorine
作者:Camille Gignoux、Annabella F. Newton、Alexandre Barthelme、William Lewis、Marie-Lyne Alcaraz、Robert A. Stockman
DOI:10.1039/c1ob06380d
日期:——
A short and efficient synthesis of an advanced intermediate (1) in the Clive route to halichlorine has been achieved in 12 steps and 13.2% yield by a combined two-directionalsynthesis/tandem reaction strategy.