Chou, Teh-Chang; Liou, Jing-Ann; Lin, Cheng-Tung, Journal of the Chinese Chemical Society, 1994, vol. 41, # 5, p. 565 - 572
作者:Chou, Teh-Chang、Liou, Jing-Ann、Lin, Cheng-Tung
DOI:——
日期:——
Face-selectivity in [4+2]-cycloadditions to novel polycyclic benzoquinones. Remarkable stereodirecting effects of a remote cyclopropane ring and an olefinic bond
作者:Goverdhan Mehta、Celine Le Droumaguet、Kabirul Islam、Anakuthil Anoop、Eluvathingal D. Jemmis
DOI:10.1016/s0040-4039(03)00504-5
日期:2003.4
benzoquinones, where the dienophilic moiety is imbedded in an isosteric environment, can be modulated by a remote olefinic bond and a cyclopropanering. Quantum mechanical calculations while reproducing the observed diastereoselectivities at the TS level indicate the involvement of ground state orbital effects.