Polyketoenols and chelates. Glaucyrones and their reactions with magnesium methoxide
作者:S. Richard Baker、Leslie Crombie
DOI:10.1039/p19810000178
日期:——
complete ester exchange in the reaction of 3,3′-diacetyl-5,5′-bisethoxycarbonylglaucyrone (1) with excess of magnesiummethoxide, in accord with the mechanism proposed. On reaction with the latter reagent, the two new glaucyrones give aromatic penta-esters (11) and (14), and their mechanisms of formation are discussed. Heating these penta-esters effects cyclisation to xanthyrones having aromatic side-chain