ChemInform Abstract: Diels—Alder Reactions of α,β‐Unsaturated Thioesters and α,β‐Unsaturated Selenoesters.

Abstract

Diels-Alder Reactions of α,β-Unsaturated Thioesters and α,β-Unsaturated Selenoesters.-The regio-and exo/endo-selectivity of Diels-Alder reactions of thio-and selenoesters (II) with dienes is investigated. In general, thermal reactions show only low selectivities as expected. The selectivity improves upon use of soluble Lewis acid promotors such as EtAlCl 2 and TiCl 4 . -(BYEON, C.-H.; CHEN, C.-Y.; ELLIS, D. A.; HART, D. J.; LI, J.; Synlett (1998) 6, 596-598; Dep. Chem., Ohio State Univ., Columbus, OH 43210, USA; EN)