Preparation of .alpha.-aryl .gamma.-butyrolactones
申请人:John Wyeth & Brother, Ltd.
公开号:US05629432A1
公开(公告)日:1997-05-13
This appliciation discloses a process for preparing a lactone of general formula (I), where R is an optionally substituted phenyl group or an optionally substituted mono- or bicyclic heteroaryl radical which process comprises reacting an anion of a malonate of formula (II) with an ethylene compound of formula (III) Y--CH.sub.2 --CH.sub.2 OZ, to give a compound of formula (IV) and hydrolysing the compound of formula (IV) to give a lactone of formula (I). The lactones are of use as intermediates for preparing 5-HT.sub.1A binding agents. ##STR1##
PROCESS FOR THE PREPARATION OF $g(a)-ARYL-$g(g)-BUTYROLACTONES
申请人:JOHN WYETH & BROTHER LIMITED
公开号:EP0672039A1
公开(公告)日:1995-09-20
PROCESS FOR THE PREPARATION OF ALPHA-ARYL-GAMMA-BUTYROLACTONES
申请人:JOHN WYETH & BROTHER LIMITED
公开号:EP0672039B1
公开(公告)日:1997-07-09
US5629432A
申请人:——
公开号:US5629432A
公开(公告)日:1997-05-13
[EN] PROCESS FOR THE PREPARATION OF alpha -ARYL- gamma -BUTYROLACTONES<br/>[FR] PROCEDE DE PREPARATION D' alpha -ARYL- gamma -BUTYROLACTONES
申请人:——
公开号:WO1994012487A1
公开(公告)日:1994-06-09
[EN] A process for preparing a lactone of general formula (I), where R is an optionally substituted phenyl group or an optionally substituted mono- or bicyclic heteroaryl radical which process comprises reacting an anion of a malonate of formula (II) with an ethylene compound of formula (III) Y-CH2-CH2OZ, to give a compound of formula (IV) and hydrolysing the compound of formula (IV) to give a lactone of formula (I). The lactones are of use as intermediates for preparing 5-HT1A binding agents. [FR] L'invention concerne un procédé de préparation d'une lactone de la formule générale (I). Dans cette formule, R représente un groupe phényle éventuellement substitué ou un radical hétéroaryle mono- ou bicycle éventuellement substitué. Ce procédé consiste à faire réagir un anion d'un malonate de la formule (II) avec un composé d'éthylène de la formule (III): Y-CH2-CH2OZ pour donner un composé de la formule (IV), et à hydrolyser le composé de la formule (IV) pour donner une lactone de la formule (I). Ces lactones sont utiles comme intermédiaires dans la préparation d'agents liants la 5-HT1A.