Di- and trisubstituted butenolides and tricyclic unsaturated lactones, of high enantiomeric excess were prepared via the efficient sequential esterification Horner–Wadsworth–Emmons reaction of enantiomerically enriched 2-hydroxy-substituted phenones and aromatic cyclic α-hydroxy ketones in good yield.
高对映体富集的2-羟基取代的苯酮和芳族环状α-羟基酮的高效连续酯化Horner-Wadsworth-Emmons反应制备了对映体过量的二取代和三取代的
丁烯内酯和
三环不饱和内酯,收率很高。