Convenient syntheses of 2,3,4,5-tetrahydro-1,4-benzothiazepines, -1,4-benzoxazepines and -1,4-benzodiazepines
作者:Alan R. Katritzky、Yong-Jiang Xu、Hai-Ying He
DOI:10.1039/b111296c
日期:2002.2.22
-1,4-benzoxazepine (12) and -1,4-benzodiazepine (20) are obtained via aluminium chloride mediated intramolecular cyclizations of N,N-bis(1H-1,2,3-benzotriazol-1-ylmethyl)-2-(arylthio)ethan-1-amines 4a,b, -2-(phenoxy)ethan-1-amine (11) and -N-[2-(N′-methylanilino)ethyl]amine (19), respectively. Subsequent nucleophilic substitutions of the benzotriazolyl group in 5a,b, 12 and 20 succeeded with Grignard
通过氯化铝介导的分子内环化反应制得4-Benzotriazolylmethyl-2,3,4,5-tetrahydro-1,4-benzothiazepines 5a,b,-1,4- benzoxazepine(12)和-1,4- benzodiazepine(20)。的ñ,ñ双(1 ħ 1,2,3-苯并三唑-1-基甲基)-2-(芳基硫基)乙烷-1-胺4A,4B,-2-(苯氧基)乙烷-1-胺(11)和-N- [2-(N'-甲基苯胺基)乙基]胺(19)。随后在5a,b,12和20中苯并三唑基的亲核取代成功使用格氏试剂,亚磷酸三乙酯,硼氢化钠和甲硅烷基烯醇醚制得新颖的2,3,4,5-四氢-1,4-苯并硫氮杂s 6-9,-1,4-苯并x氮杂13和14,以及- 1,4-苯并二氮杂21–23,收率高。