作者:Alan R. Katritzky、Rexiat Maimait、Yong-Jiang Xu、Rena G. Akhmedova
DOI:10.1055/s-2002-23538
日期:——
AlCl3-mediated intramolecular cyclization of N,N-bis(1H-1,2,3-benzotriazol-1-ylmethyl)-3-phenyl-1-propanamine (5) gave 2-benzotriazolylmethyl-2,3,4,5-tetrahydro-1H-2-benzazepine (6). Subsequent nucleophilic substitution of the benzotriazolyl group in 6 with Grignard reagents, triethyl phosphite and sodium borohydride afforded 2,3,4,5-tetrahydro-1H-2-benzazepines 1a-e, 2 and 3. Similarly, TiCl4-mediated cyclization of 8 and 10 gave 5,6,7,13b-tetrahydro-9H-isoindolo[1,2-a][2]benzazepin-9-one (9) and 1,2,5,6,7,11b-hexahydro-3H-pyrrolo[2,1-a][2]benzazepin-3-one (11), respectively.
AlCl3 介导的 N,N-双(1H-1,2,3-苯并三唑基-1-基甲基)-3-苯基-1-丙胺 (5) 的分子内环化得到 2-苯并三唑基甲基-2,3,4,5-四氢-1H-2-苯并氮杂 (6)。随后用格氏试剂、亚磷酸三乙酯和硼氢化钠对 6 中的苯并三唑基进行亲核取代,得到 2,3,4,5-四氢-1H-2-苯并氮杂卓 1a-e、2 和 3。同样,TiCl4 介导的 8 环化和10得到5,6,7,13b-四氢-9H-异吲哚并[1,2-a][2]苯并氮杂-9-酮(9)和1,2,5,6,7,11b-六氢-3H分别为-吡咯并[2,1-a][2]苯并氮杂-3-酮(11)。