Ephedrine and pseudoephedrine precursors

Details Ephedrine and pseudoephedrine precursors Ephedrine and pseudoephedrine precursors

1979-09-24

1981-07-07

Douglas, Winston A.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560142, 560 32, 562442, 562451, 564185, 564219, 564364, 564381, 260465D, C07C10320, C07C10375

Patent

active

042774209

ABSTRACT:
Preparation of novel prochiral olefinic compounds which can be asymmetrically hydrogenated to enantiomers, which are converted to ephedrine and pseudoephedrine by described procedures.

REFERENCES:
patent: 2458420 (1949-01-01), Reynolds et al.
patent: 2458422 (1949-01-01), Reynolds et al.
patent: 4061767 (1977-12-01), Ertel et al.

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