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. 30, 1976
Filed:
Apr. 09, 1973
Vsevolod Vasilievich Perekalin, Leningrad, SU;
Alexandra Semenovna Sopova, Leningrad, SU;
Maiva Mikhailovna Zobacheva, Leningrad, SU;
Rasma Yanovna Spunde, Rizhsky Raion, Olaine, SU;
Uldis Yanovich Mikstais, Rizhskv Raion, Olaine, SU;
Maiya Petrovna Silaya, Rizhskv Raion, Olaine, SU;
Other;
Abstract
The invention relates to a new substance, namely the hydrochloride of .beta.-phenyl- .gamma.-aminobutyric acid of the following formula: ##EQU1## and to the process for its production which comprises condensing malonic ester with .beta.-nitrostyrene resulting in the separation of an ester of .gamma.-carbomethoxy-.beta.-phenyl-.gamma.-nitrobutyric acid at a temperature ranging from 0.degree. to 14.degree.C, reducing the ester thus obtained with hydrogen in the presence of the Raney nickel under a pressure of 6 to 30 atm, treating 3-carbomethoxy-4-phenyl-2-pyrrolidone, as formed by the reduction, with hydrochloric acid, and separating the desired product.