The electroreduction of 1-indolealkanones in isopropanol gave five-, six-, and seven-membered trans-cyclized products stereospecifically. On the other hand, the electroreduction of 3-methoxycarbonyl-1-indolealkanones afforded mixtures of two diastereomers of the corresponding trans- and cis-cyclized products. The DFT calculations for the radical anions support that the reductive couplings of 1-indolealkanones
1-
吲哚链烷
酮在
异丙醇中的电还原立体定向生成五元,六元和七元反式环化产物。另一方面,3-甲
氧基羰基-1-
吲哚链烷
酮的电还原得到相应反式和顺式环化产物的两种非对映异构体的混合物。自由基阴离子的DFT计算支持1-
吲哚链烷
酮和3-甲
氧基羰基-1-
吲哚链烷
酮的还原偶联通过不同的反应机理进行。