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:
Mar. 26, 1991
Filed:
Jul. 26, 1989
Charles K McGill, Indianapolis, IN (US);
James J Sutor, Indianapolis, IN (US);
Reilly Industries, Inc., Indianapolis, IN (US);
Abstract
In a Chichibabin amination of a nitrogen-containing heterocyclic base by sodamide in an organic solvent, the improvement comprising conducting the reaction under pressure of at least about 50 psi in the gas phase above the reaction mixture and adding ammonia to the mixture sufficient to produce a partial pressure of ammonia of at least about 5 psi in the gas phase. Preferred temperature and pressure ranges are disclosed, as are catalysts and other preferred steps for practicing the reaction. Significant results are obtained including improved and changed yields from those classically expected in Chichibabin aminations, including new compositions of matter in at least three cases.