Dramatically different photochemical behaviour of 1-aroyl-2-methylene piperidine and pyrrolidine derivatives. An expeditious synthesis of ruspolinone
作者:A. Couture、E. Deniau、P. Grandclaudon、S. Lebrun
DOI:10.1016/0040-4039(96)01765-0
日期:1996.10
Upon irradiation in neutral solvent, the diversely substituted 1-aroyl-2-methylenepiperidines 6a-f give rise to photocyclized products 4a-f while their pyrrolidine congeners 7a,c,d afford enaminoketones 18a,c,d products of photo-Fries rearrangement.
在中性溶剂中辐照后,被不同取代的1-芳酰基-2-亚甲基哌啶6a-f产生光环化产物4a-f,而它们的吡咯烷同类物7a,c,得到光-弗里斯重排的烯氨基酮18a,c,d产物。