The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 26, 1976
Filed:
Apr. 07, 1975
Stylianos Sifniades, Madison, NJ (US);
William J Boyle, Jr, Warren, NJ (US);
Jan F Van Peppen, Chester, NJ (US);
Allied Chemical Corporation, Morris Township, NJ (US);
Abstract
Resolution of .alpha.-amino-.epsilon.-caprolactam with simultaneous racemization of the undesired D-.alpha.-amino-.epsilon.-caprolactam enantiomer is effected by forming a coordinately saturated .alpha.-amino-.epsilon.-caprolactam complex with NiCl.sub.2, preferably crystallizing the L-.alpha.-amino-.epsilon.-caprolactam complex in the presence of fine seed crystals of L-.alpha.-amino-.epsilon.-caprolactam complex of NiCl.sub.2 and catalytic amounts of a strong base selected from the alkoxides or hydroxides of Ni(II) and recovering L-.alpha.-amino-.epsilon.-caprolactam hydrochloride from the crystalline product.