An Efficient Synthesis of 2-Ethyl-7-chloro-4-methylthieno[4,3,2-e,f][3]benzazepine (SK&F 106686)viaBromomethylation of 2-Ethyl-5-chlorobenzo[b]thiophene
摘要:
The synthesis of 2-ethyl-3-bromoethyl-5-chlorobenzo[b]thiophene (6) is described using a unique phase transfer catalyzed bromoethylation of 2-ethyl-5-chlorobenzo[b]thiophene (5). Compound 6 was converted in six steps and in 55% overall yield to the angiotension II antagonist, SK&F 106686 (1).
An Efficient Synthesis of 2-Ethyl-7-chloro-4-methylthieno[4,3,2-e,f][3]benzazepine (SK&F 106686)viaBromomethylation of 2-Ethyl-5-chlorobenzo[b]thiophene
摘要:
The synthesis of 2-ethyl-3-bromoethyl-5-chlorobenzo[b]thiophene (6) is described using a unique phase transfer catalyzed bromoethylation of 2-ethyl-5-chlorobenzo[b]thiophene (5). Compound 6 was converted in six steps and in 55% overall yield to the angiotension II antagonist, SK&F 106686 (1).
[EN] PROCESS FOR THE PREPARATION OF SUBSTITUTED 3-HALOMETHYL-BENZOTHIOPHENES, BENZOFURANS AND -INDOLES AND INTERMEDIATES THEREOF<br/>[FR] PROCEDE DE PREPARATION DE 3-HALOMETHYL-BENZOTHIOPHENES, -BENZOFURANES ET -INDOLES SUBSTITUES ET INTERMEDIAIRES ASSOCIES
申请人:SMITHKLINE BEECHAM CORPORATION
公开号:WO1994027985A1
公开(公告)日:1994-12-08
(EN) This invention relates to novel intermediates and processes for preparing useful intermediates of formula (I) which are useful in the synthesis of pharmaceutically active agents.(FR) L'invention se rapporte à de nouveaux intermédiaires et procédés destinés à la préparation d'intermédiaires utiles répondant à la formule (I) et aptes à être utilisés pour la synthèse d'agents à activité pharmaceutique.
An Efficient Synthesis of 2-Ethyl-7-chloro-4-methylthieno[4,3,2-e,f][3]benzazepine (SK&F 106686)<i>via</i>Bromomethylation of 2-Ethyl-5-chlorobenzo[b]thiophene
作者:L. N. Pridgen、K. Huang、R. J. Mills、S. Shilcrat、A. Tickner
DOI:10.1080/00397919808004456
日期:1998.9
The synthesis of 2-ethyl-3-bromoethyl-5-chlorobenzo[b]thiophene (6) is described using a unique phase transfer catalyzed bromoethylation of 2-ethyl-5-chlorobenzo[b]thiophene (5). Compound 6 was converted in six steps and in 55% overall yield to the angiotension II antagonist, SK&F 106686 (1).