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:Alan R. Katritzky、Yong-Jiang Xu、Hai-Ying He、Shamal Mehta
DOI:10.1021/jo010179b
日期:2001.8.1
(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.
1- [2-芳硫基(氧基)乙基] -5-苯并三唑基-2-吡咯烷酮6a-e,12和3-苯并三唑基-2- [2-芳硫基(氧基)乙基] -1-异吲哚啉酮9a-f,14为可容易地从苯并三唑(4),2-(芳基硫烷基)乙胺3或2-苯氧基乙胺(11)与2,5-二甲氧基-2,5-二氢呋喃(5)或2-甲酰基苯甲酸(8)的反应中获得。路易斯酸介导的6和9的环化分别产生了新的1,4-苯并硫氮杂7 7a-e和10a-f。12和14的环化分别得到1,4-苯并x氮杂13和15。