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:
Jul. 30, 1985
Filed:
May. 23, 1984
Applicant:
Inventors:
Arthur Jackson, Washington, GB;
Graham Heyes, Durham, GB;
Assignee:
Fine Organics Limited, Middlesbrough, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544 54 ;
Abstract
A method for the preparation of a thiazine derivative of the formula ##STR1## where each R is independently selected from hydrogen or a lower alkyl having 1 to 4 carbon atoms, the method comprising reacting together a sulphur donor which is selected from sulfur, ammonium or alkali metal sulfides, ammonium or alkali metal hydrosulfides, or hydrogen sulfide, 1,1-bis(methylthio)-2-nitroethene and a compound of the formula