La 反应 est 适用一个 une variete de composes carbonyles insatures destructures different tels que, cetones aromatiques, cetones acetyleniques, cetones ethyleniques et aldehydes。L'utilite est illustree par la synthese fortement Stereocontrolee d'intermediaires de prostaglandines, de quelques pheromones d'insectes, d'alcools terpeniques primaires chiraux, de phenyloxiranne optiquement actif...
Synthesis of alkylidene cyclopentenones. Enolization of 4-substituted cyclopent-4-ene-1,3-diones
摘要:
The regioselective enolization of 4-substituted cyclopentene-1,3-diones 3a-e is investigated under basic and acidic conditions. Enols 1 and enolethers 6, 7 are formed with the simultaneous endocyclic double bond migration in the side chain. (C) 1998 Elsevier Science Ltd. All rights reserved.