摘要:
The Diels-Alder reaction of benzyl, methyl (S)-2-(p-tolylsulfinyl) maleate with several 1-vinylcycloalkenes, catalyzed by TiCl4, occurred with complete regio and stereoselectivity. The regioselectivity of the sulfinyl elimination from the adducts, as well as;the stereoselectivity of the epoxidation and the hydroboration of the resulting [4.n.0] bicyclic compounds, increase with the size of the second ring.