作者:Ernst Peter Müller
DOI:10.1002/hlca.19850680504
日期:1985.8.14
Thermolysis of 5,6-epimino-5,6-dihydro-β-ionone (1) and its N-methyl derivative (2) leads to their monocyclic isomers 6 and 10, respectively, presumably due to a direct [1,5]-H shift; on prolonged heating, these isomers are converted easily into pyrrole derivatives. In contrast, the thermoisomer 12 resulting from 5,6-(N-methoxycarbonyl)epimino-5,6-dihydro-β-ionone (3) by the same mechanism, does not
5,6-epimino-5,6-dihydro-β-ionone(1)及其N-甲基衍生物(2)的热解分别导致它们的单环异构体6和10,大概是由于直接的[1,5] -H移位;在长时间加热下,这些异构体容易转化为吡咯衍生物。相反,由5,6-(N-甲氧基羰基)表诺基5,6-二氢-β-紫罗兰酮(3)产生的热异构体12不经过进一步的环转化,而是与其更稳定的互变异构体相平衡。13。