Displacement purification of salts

Details Displacement purification of salts Displacement purification of salts

1980-11-24

1982-05-11

Milestone, Norma S.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546204, C07D21170

Patent

active

043294693

ABSTRACT:
An optically impure diastereomeric salt is purified by treating a suspension of the salt in an appropriate solvent or solvent mixture with the required amount of the desired, optically pure, acid or base.

REFERENCES:
Paul Pfeiffer, Organische Molekulverbindungen (1927), p. 129.
Houben-Weyl, Methoden der Organischen Chemie, vol. I/1 (1958), pp. 457-461.
A. Blanchard et al., Synthetic Inorganic Chemistry (1930), pp. 114-115.
Collet et al., Chem. Rev. 80, 215 (1980).
Wong et al., Tetrahedron Letters 40, 3813 (1978).
Wilen et al., Tetrahedron, 33, 2725 (1977).
Horeau, Tetrahedron, 31, 1307 (1975).

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