Difference in photochemical behavior in 3,6- and 2,5-di-<i>tert</i>-butyl-3<i>H</i>-azepine: The first photochemical bond formation between 2- and 6-position of 3<i>H</i>-azepine ring
作者:Kyosuke Satake、Yuko Tawada、Shizuka Takami、Masaru Kimura
DOI:10.1002/jhet.5570390637
日期:2002.11
Different photochemical behavior between 3,6- and 2,5-di-t-butyl-3H-azepine was observed. The former gave wavelength dependent products 3,5-di-t-butylpyridine on irradiation through Pyrex filter via photolysis and 4,7-di-t-butyl-2-azabicyclo[3.2.0]hepta-2,6-diene on irradiation through quartz filter via photo-isomerization. Meanwhile, 2,5-di-t-butyl derivative gave exclusively a labile 2,5-di-t-butyl-6-azabicyclo-[3
二- 2,5- -3,6-之间不同光化学行为吨丁基-3- ħ观察吖庚因。前者给予波长相关的产品3,5-二-吨丁基吡啶上照射通过派热克斯滤光片通过光解和4,7-二-吨-丁基-2-氮杂双环[3.2.0]庚-2,6-二烯上照射通过石英滤光片通过光异构化。同时,2,5-二-吨-丁基衍生物只给了一个不稳定的2,5-二-吨-丁基-6-氮杂双环[3.2.0]上通过派热克斯滤光片照射庚-2,6-二烯通过迄今未知在环的2位和6位之间形成键的光异构化模式。