Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1974-07-01
1976-03-02
Randolph, John D.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
26032645, 260439CY, 260534L, 260561A, C07D22310, C07D22312
Patent
active
039417760
ABSTRACT:
Resolution of .alpha.-amino-.epsilon.-caprolactam with simultaneous racemization of the undesired .alpha.-aminocaprolactam enantiomer is effected by preferentially crystallizing the L- (or D-) .alpha.-amino-caprolactam compound in the presence of a racemization catalyst. In a narrower embodiment racemization of .alpha.-amino-.epsilon.-caprolactam is effected by alternate routes of forming a coordinately saturated aminolactam-metal complex and reacting with a strong base or reacting a mixture of an aminolactam salt and aminolactam free base with a chelating carbonyl compound and a metal ion or reacting a mixture of an aminolactam salt and aminolactam free base in the presence of a salen derivative complex.
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Boyle, Jr. William J.
Sifniades Stylianos
Van Peppen Jan F.
Allied Chemical Corporation
Bond Robert T.
Plantamura Arthur J.
Randolph John D.
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