Synthesis of oxygen spirocycles by manganic acetate promoted additions to exocyclic enol ether derivatives
作者:John M. Mellor、Shahid Mohammed
DOI:10.1016/0040-4039(91)85053-8
日期:1991.11
Oxidative addition, promoted by manganic acetate, of β-dicarbonyl compounds to enol lactones and related enol derivatives having an exocyclic double bond affords spirocyclic products, and addition to endocyclic enolethers gives fused acetals and ketals.
Synthesis of oxaspirolactones by manganic acetate promoted additions to exocyclic enol lactones
作者:John M. Mellor、Shahid Mohammed
DOI:10.1016/s0040-4020(01)87229-x
日期:1993.8
Oxidation of diverse β-diketones and β-ketoesters with manganic acetate generates intermediates which add to exocyclic enollactones to afford spirocyclic lactone products. In the presence of added copper acetate the reaction pathway can be diverted to give unsaturated ketoesters.