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:
May. 11, 1982
Filed:
Oct. 31, 1980
Applicant:
Inventors:
John W Ager, Princeton, NJ (US);
Maurice J Harding, Princeton, NJ (US);
Charles E Hatch, III, Pennington, NJ (US);
Assignee:
FMC Corporation, Philadelphia, PA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
549470 ; 544-3 ; 544 59 ; 544153 ; 544159 ; 544164 ; 544383 ; 546195 ; 546238 ; 548356 ; 549 19 ; 549 28 ; 2602 / ; 2602 / ; 2602 / ; 2604 / ; 2604654 ; 260968 ; 560 16 ; 560 17 ; 560148 ; 564225 ; 548517 ; 548525 ; 548542 ; 549371 ; 549424 ; 549438 ; 549449 ; 549452 ; 549480 ;
Abstract
An improved process is disclosed for sulfenylating carbamates in the presence of a solvent and acid acceptor, in which the reaction between a carbamate and a sulfenyl halide is conducted in the presence of a catalytic amount of a complex of a lower alkylamine and sulfur dioxide. Several methods for preparing and utilizing the complex in the reaction are disclosed and exemplified.