Syntheses of 1,4-benzothiazepines and 1,4-benzoxazepines via cyclizations of 1-[2-arylthio(oxy)ethyl]-5-benzotriazolyl-2-pyrrolidinones and 3-benzotriazolyl-2-[2-arylthio(oxy)ethyl]-1-isoindolinones.
作者信息
Katritzky A R, Xu Y J, He H Y, Mehta S
机构信息
Center for Heterocyclic Chemistry, Department of Chemistry, University of Florida, Gainesville, 32611-7200, USA.
出版信息
J Org Chem. 2001 Aug 10;66(16):5590-4. doi: 10.1021/jo010179b.
PMID:11485488
Abstract
1-[2-Arylthio(oxy)ethyl]-5-benzotriazolyl-2-pyrrolidinones 6a-e, 12 and 3-benzotriazolyl-2-[2-arylthio(oxy)ethyl]-1-isoindolinones 9a-f, 14 are readily available from reactions of benzotriazole (4), 2-(arylsulfanyl)ethylamines 3, or 2-phenoxyethylamine (11) with 2,5-dimethoxy-2,5-dihydrofuran (5) or 2-formylbenzoic acid (8). Lewis acid mediated cyclizations of 6 and 9 produced novel 1,4-benzothiazepines 7a-e and 10a-f, respectively. Cyclizations of 12 and 14 gave 1,4-benzoxazepines 13 and 15, respectively.
摘要
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