Patent ID: 7772191
Filing Date: 2010-08-10
Classification: C07D,C07F,C07H

Abstract:
1. Process for preparing the compounds of general formula III, wherein R R R R′ denotes hydrogen, C R L1 independently of one another are selected from among fluorine, chlorine, bromine, C while by the aryl groups mentioned in the definition of the above groups are meant phenyl or naphthyl groups, which may be mono- or polysubstituted with L1; said method comprised of the step of adding an organometallic compound of the formula VI wherein R or a derivative thereof obtained by transmetallation; which compound of the formula VI may be obtained by halogen-metal exchange or by the insertion of a metal in the carbon-halogen bond of a halogen-benzylbenzene compound of general formula V wherein R and optionally subsequent transmetallation, to a gluconolactone of general formula IV wherein R and reacting the adduct obtained with water or an alcohol R′—OH, where R′ denotes C