Studies of Diastereoselectivity in Diels−Alder Reactions of (S)<i>S</i>-4a,5,8,8a-Tetrahydro-5,8-methane-2-(<i>p</i>-tolylsulfinyl)-1,4-naphtho- quinones with Cyclopentadiene
作者:M. Carmen Carreño、José L. García Ruano、Antonio Urbano、Miguel A. Hoyos
DOI:10.1021/jo9521209
日期:1996.1.1
compounds 6 and 7 have proved to be adequate rigid models to evaluate the ability of the sulfinyl group to control the diastereoselectivity of the [4 + 2] cycloadditions of cyclopentadiene on the ene-dione moiety. The results of thermal and Lewis acid-catalyzed reactions allowed us to establish that both reactivity and endo/exo selectivity were modulated by the presence of the sulfinyl group, the endo-anti-endo