Maleimide cycloadditions by sulfinyldienes: is the sulfur configuration the only controller of the diastereofacial selectivity?
作者:Maria C. Aversa、Anna Barattucci、Paola Bonaccorsi、Cristina Faggi、Eszter Gacs-Baitz、Assunta Marrocchi、Lucio Minuti、Aldo Taticchi
DOI:10.1016/j.tet.2005.05.089
日期:2005.8
Cyclohexylsulfinyl-3-methyl-1,3-butadienes 5, 6, and 1-[1-(cyclohexylsulfinyl)ethenyl]cyclohexene (7), easily prepared from cyclohexanethiol (1) via transient cyclohexanesulfenic acid (4), were reacted with N-phenylmaleimide under different conditions, at normal and high pressure. The stereochemical outcome of these cycloadditions contributes a better understanding of the relationships among different