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:
Apr. 30, 1991
Filed:
Feb. 26, 1990
Applicant:
Inventors:
John H Hoare, Hamilton Square, NJ (US);
Marc Halfon, Cranberry, NJ (US);
Assignee:
FMC Corporation, Philadelphia, PA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
5482632 ;
Abstract
Process for the nitration of a compound of formula I below with nitric acid in sulfuric acid, according to the following general equation: ##STR1## where X is a Cl or F and R is haloalkyl, for example CHF.sub.2 or CF.sub.2 CHF.sub.2, in which the improvement comprises carrying out said reaction in fuming sulfuric acid.