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:
Dec. 30, 1980
Filed:
Jun. 18, 1979
John J Taylor, St. Peters, MO (US);
Mallinckrodt, Inc., St. Louis, MO (US);
Abstract
A process for the preparation of 2,2-diphenyl-4-(dimethylamino)-pentane nitrile. A charge mixture is prepared comprising diphenylacetonitrile, 1-(dimethylamino)-2-halopropane, a base, water, a water-immiscible organic solvent, and a quaternary salt selected from a group consisting of tetrabutylammonium halides, tetrabutylammonium hydrogen sulfate, cetyltrimethylammonium halides, benzyltriphenylphosphonium halides, and methyltrialkyl (C.sub.8 -C.sub.10) ammonium halides. The mixture is heated under an inert atmosphere to effect formation of 2,2-diphenyl-4-(dimethylamino)-pentane nitrile by reaction of diphenylacetonitrile, 1-(dimethylamino)-2-halopropane and a base.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile