[Reaction: see text] Six chiral ionic liquids were prepared and evaluated as "chiral induction solvents" in which two different dibenzobicyclo[2.2.2]octatrienes were photoisomerized to chiral products. Enantiomeric excesses from 3 to 12% were obtained from the photochemical di-pi-methane rearrangement. Results indicate that the chiral induction derives from an ion pairing interaction of the deprotonated
[反应:见正文]制备了六种手性
离子液体,并作为“手性诱导溶剂”进行了评估,其中将两种不同的二苯并双环[2.2.2]
十八碳烯光异构化为手性产物。从光
化学二-pi-
甲烷重排获得3至12%的对映体过量。结果表明,手性诱导源自去质子化的二酸与
离子液体阳离子的离子配对相互作用。这是关于通过手性IL进行不可逆的单分子光
化学异构化的手性诱导的首次报道。