Stereoselective photo[4+2]cycloadditions of 2-pyrone-5-carboxylates with maleimides in the solid state and in solution
作者:Tom Obata、Tetsuro Shimo、Takaaki Suishu、Kenichi Somekawa
DOI:10.1002/jhet.5570350623
日期:1998.11
Solid state photoreactions and thermal reactions of 2-pyrone-5-carboxylates with maleimides gave endo-[4+2]cycloadducts, while the sensitized photoreactions gave exo-[4+2]cycloadducts stereo-selectively.
固态光反应和2-吡喃基5-羧酸盐与马来酰亚胺的热反应产生内-[4 + 2]环加合物,而敏化光反应立体选择性地产生exo- [4 + 2]环加合物。