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:
Sep. 26, 1989
Filed:
Apr. 03, 1986
Gevork Minaskanian, Irvine, CA (US);
James V Peck, Costa Mesa, CA (US);
Nelson Research & Development Co., Irvine, CA (US);
Abstract
This invention provides a process for preparing lactams, by selectively reacting a novel 1-hydrocarbyl-amino (or heteroatom-substituted hydrocarbylamino); 1,1-dicarboxylic acid, alkylesters; 1-hydrocarbyl (or heteroatom-substituted hydrocarbyl) carboxylic acid, alkyl ester methane, as the salt of an acid having a pKa of 0 or more, in the absence or presence of a base, whereby novel lactams wherein one or both hydrocarbyl moieties are incorporated into the lactam ring are obtained. That is, the acid moiety of said novel salt promotes the reaction whereby both hydrocarbyl moieties are incorporated into the ring, while the presence of a base, in an amount substantially equivalent to said acid promotes the reaction whereby only one hydrocarbyl is incorporated into the ring.