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Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
A borohydride-type compound can be obtained by reacting a salt of a mineral acid, a carboxylic acid or an organic sulphonic acid and an optically active aminoalcohol of the formula <IMAGE> in which R3 denotes a C(1-8)-alkyl, C(6-10)-aryl or C(7- 11)-aralkyl group, R4 denotes a phenyl group which can be substituted by a C(1-6)-alkyl or C(1-6)-alkoxy group, and the symbol * denotes an asymmetrical C atom, in an indifferent gas atmosphere and in the presence of an indifferent solvent, with a metal borohydride, with the molar ratio between the metal borohydride and the optically active aminoalcohol being from 0.3:1 to 2:1.
DK142093A1993-12-211993-12-21Optically active alpha beta alcohol mfr. - comprises asymmetric reduction of ketone cpd., with boron hydride reduction agent
DK170377B1
(en)