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:
Feb. 15, 1983
Filed:
Jun. 04, 1980
Applicant:
Inventors:
Yasuko Osawa, Tokyo, JP;
Saburo Uchikuga, Yokohama, JP;
Assignee:
Sogo Pharmaceutical Co., Ltd., Sagamihara, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
548146 ; 548147 ; 564500 ; 2604 / ;
Abstract
A method for preparing 2,2-disubstituted thiazolidine involves reacting aminoalkyl hydrogen-sulfate with a compound having hydrosulfide ion in the presence of ketone. According to the present method, such thiazolidine can be prepared in good yield and desired purity without using harmful ethylenimine as a starting material.