Synthesis of 1H-1-benzazepines by thermolysis of 2a,7b-dihydro-3H-cyclobut[b]indoles
作者:Masazumi Ikeda、Kazunori Ohno、Masami Takahashi、Toshiko Uno、Yasumitsu Tamura、Masaru Kido
DOI:10.1039/p19820000741
日期:——
derivative) and R= 0.108 (for the pivaloyl derivative). No abnormal results were found. Direct thermolyses of the dihydrocyclobut[b]indoles resulted in the formation of 1-substituted 1H-1-benzazepines, N-substituted 1-naphthylamines, and 1-substituted indoles, whose relative distributions depend upon the nature of the substrate and the reaction temperature. The presence of silver ion significantly lowered the
描述了3-取代的2a,7b-二氢-3 H-环丁[b]吲哚和一些2a-甲基衍生物的合成和热解。对3-乙酰基和3-新戊酰基衍生物进行了X-射线晶体结构分析,它们都在单斜晶系中结晶。空间组C 2 / c,Z = 8,a = 15.277(7),b = 9.035(5),c = 14.485(11)Å,对于前者,β= 104.27(5)°,而空间组P 2 1 / c,Z = 4,a = 8.696(7),b = 15.227(12),c= 9.428(8)Å,β= 102.67(7)°。通过直接方法解析晶体结构,并将原子参数精制为R = 0.118(对于乙酰基衍生物)和R = 0.108(对于新戊酰基衍生物)。未发现异常结果。二氢环丁[ b ]吲哚的直接热解导致形成1-取代的1 H -1-苯并ze庚因,N-取代的1-萘胺和1-取代的吲哚,它们的相对分布取决于底物的性质和反应温度。银离子的存在显着降低了开环所需的温度并产生了1