α -(4 -Nitro Phenoxy) Chalcones As Synthons for Cis-(±)-1,5-Benzothiazepines
摘要:
alpha-(4 -Nitro Phenoxy) chalcones, V have been utilized as intermediate for the synthesis of some new cis- (+/-) -2-aryl-3-(4-nitro phenoxy)-4-phenyl-1,5-benzothiazepine VI by cycloconden-sation of 2-amino thiophenol in the presence of mild base.