Reaction of singlet oxygen with enamino carbonyl systems. A general method for the synthesis of .alpha.-keto derivatives of lactones, esters, amides, lactams, and ketones
Reaction of singlet oxygen with enamino carbonyl systems. A general method for the synthesis of .alpha.-keto derivatives of lactones, esters, amides, lactams, and ketones
A process for the preparation of venlafaxin and/or the physiologically acceptable addition salts thereof that consists of reacting a compound of general formula (II) where R is a C1-C10 alkyl, aryl, aralkyl or cycloalkyl group of 3 to 6 atoms of carbon, with a organomagnesium compound of general formula (III) where X is an atom of halogen and, if desired, a salt of the thus obtained venlafaxin is formed by reaction thereof with a physiologically acceptable acid.
Reaction of singlet oxygen with enamino carbonyl systems. A general method for the synthesis of .alpha.-keto derivatives of lactones, esters, amides, lactams, and ketones