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).
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).