82777-78-4Relevant articles and documents
Carbonylation of allylic ethers to esters
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, (2008/06/13)
A method is disclosed for the production of esters by reaction of an allylic ether with carbon monoxide in the presence of a catalytically effective amount of a Group VIII noble metal catalyst and halide compound to obtain esters. The halide compound is present in an amount sufficient to prevent the catalyst from being converted into a Group VIII metal during the reaction. When the reaction is conducted in the presence of a quaternary ammonium salt the ester may be extracted by solvent extraction to minimize catalyst decomposition caused when extractive distillation is used to separate the ester.
INVERSION DE POLARITE a4 DES CETONES α-ALLENIQUES PAR LE GROUPE TRIPHENYLPHOSPHONIO
Cristau, Henri-Jean,Viala, Jacques,Christol, Henri
, p. 1569 - 1572 (2007/10/02)
The a4 umpolung of α-allenic ketones is performed using the triphenylphosphonio group.It results in inducing an electrophilic character at the carbon γ to the carbonyl function and in changing the regioselectivity of the additions of active hyd
