STEREOSELECTIVE SYNTHESIS OF 5-SUBSTITUTED 2-ALLYL-3-OXOTETRAHYDROFURAN-2-CARBOXYLATES USING RHODIUM(II)-CATALYZED OXONIUM YLIDE FORMATION-[2,3] SHIFT

[摘要]：Reaction of 5-allyloxy-2-diazo-3-ketoesters 1 with catalytic amount of dirhodium(II) tetraacetate in dichloromethane proceeded in high yields with excellent stercoselectivities to give methyl 5-substituted 2-allyl-3-oxotetrahydrofuran-2-carboxylates 2, which are suitable intermediates for synthesis of heliespirones and their derivatives.

[全文传递流程]：

一般上传文献全文的时限在1个工作日内