Process for the preparation of optically active...

Details Process for the preparation of optically active... Process for the preparation of optically active...

C - Chemistry, Metallurgy

07

C

C07C 59/54 (2006.01) C07C 51/377 (2006.01) C07D 263/04 (2006.01) C07F 1/02 (2006.01) C07F 7/18 (2006.01)

Patent

CA 2085634

Process for the preparation of optically active .alpha.-hydroxycarboxylic acids A b s t r a c t The invention relates to a process for the preparation of optically active .alpha.-hydroxycarboxylic acids characterised in that carbamates are first reacted in the presence of a selective base and of a chelate- forming diamine to give a carbanion complex compound, this is than dia- or enantioselectively deprotonated, then substituted with CO2 and, as a final step, the heterocyclic protective group is eliminated. Le A 28 839 A- Foreign Countries

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