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:
Jan. 05, 1999
Filed:
Nov. 22, 1996
Applicant:
Inventors:
Gregory Roth, New Milford, CT (US);
John Landi, Gardner, MA (US);
Assignee:
Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, CT (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07C / ;
U.S. Cl.
CPC ...
546285 ; 564336 ;
Abstract
This invention relates to process for asymmetrically producing enantiomerically pure .alpha.-cycloalkylalkyl substitututed methanamines from .alpha.-pinene. One key step of the process of this invention utilizes the oxidation product of .alpha.-pinene, hydroxy pinanone, as a chiral auxiliary to direct the stereoselective alkylation of the corresponding ketimine. This invention also relates to key intermediates useful in the processes referred to herein.