Organométalliques et énolates gem-halogénés: Formation et propriétés des énolates halogénés du type malonique
作者:Jean Villieras
DOI:10.1016/s0022-328x(00)88279-0
日期:1972.1
The preparation of magnesium, zinc or lithium malonic or acetoacetic type enolates through halogen-metalinterconversion or direct reaction of a metal on the appropriate halogenated compound is reported. The properties of these new reagents (electrophilicity, nucleophilicity and stability) are compared to those of gem-halogenated organometallics and unchelated enolates.
Dichlorination of α-Diazo-β-dicarbonyls Using (Dichloroiodo)benzene
作者:Graham Murphy、Keith Coffey
DOI:10.1055/s-0034-1380304
日期:2015.5
α-Diazo-β-dicarbonyl compounds were chlorinated using (dichloro)iodobenzene and an activating catalyst. A broad range of reaction rates was observed, which paralleled the relative stability/nucleophilicity of the diazo compounds. Acyclic diazocarbonyls reacted faster than cyclics, and β-diketones were much faster to react than β-keto esters or β-diesters. Lewis acid activation was used for the first