group in the para position of the aromatic ring inhibits the process. 6-Bromo(or methyl)-4-phenyl-2,3,3a,4-tetrahydro-1H-benzo[f]isoindol-2-ium bromides undergo cleavage in aqueous alkaline medium at both N2-C3 and C1-N2 bonds, whereas cleavage of 6-methyl-4-phenyl-1,3,3a,4-tetrahydrospiro[benzo[f]isoindole-2,4′-morpholin]-2-ium bromide follows only the latter path. An accessible method has been developed
对[3-(4-
溴(或甲基)苯基丙-2-炔-1-基](3-苯基丙-2-烯-1-基)
溴化铵的分子内环化的研究表明,存在
溴芳环对位的碳原子或甲基会抑制该过程6-
溴(或甲基)-4-苯基-2,3,3a,4-四氢-1 H-苯并[ f ]异
吲哚-2-基
溴化物在碱性
水溶液中同时在N 2 -C 3和C 1 -N 2键处裂解,而6-甲基-4-苯基-1,3,3a,4-四氢螺[苯并[ f]]异
吲哚-2,4'-吗啉] -2-
溴化铵仅遵循后一条路径。已开发出一种易于合成的方法,用于合成6-
溴(或甲基)-4-苯基-2,3,3a,4-四氢-1 H-苯并[ f ]异
吲哚-2-
溴化物,异构体N- [ 7-
溴-2(3)-甲基-
1-苯基萘-3(2)-基甲基]
哌啶和-吗啉及其7-甲基取代的类似物。