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:
Aug. 11, 1992
Filed:
Nov. 15, 1991
Applicant:
Inventors:
Masahiko Yasumoto, Tsukuba, JP;
Touru Tsuchiya, Tsukuba, JP;
Yoichi Taguchi, Tsukuba, JP;
Isao Shibuya, Tsukuba, JP;
Katsumi Yonemoto, Tsukuba, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544-8 ;
Abstract
There is disclosed a method for producing 2,6-bis(disubstituted amino)-1,3,5-thiadiazine-4-one compounds represented by formula (I). The method comprises reacting an N,N-disubstituted cyanamide represented by formula (II) with carbonyl sulfide represented by formula (III) under a high pressure. Formula (I) ##STR1## wherein R.sub.1 and R.sub.2 each represent an alkyl group or R.sub.1 and R.sub.2 may bond together to form a ring, Formula (II) ##STR2## wherein R.sub.1 and R.sub.2 each have the same meanings as in formula (I), Formula (III)