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. 31, 2011
Filed:
Mar. 14, 2006
Applicant:
Paul Joseph Fagan, Wilmington, DE (US);
Inventor:
Paul Joseph Fagan, Wilmington, DE (US);
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 401/04 (2006.01); C07D 231/16 (2006.01); C07D 231/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
This invention relates to a method for preparing a compound of Formula 1 wherein L, R, Rand X are as defined in the disclosure, comprising contacting a 2 pyrazoline of Formula 2 with bromine at a temperature of at least about 80° C. (Formula 1) (Formula 2). This invention also discloses preparation of a compound of Formula 3 wherein X, Z, R, R, R, R, Rand n are as defined in the disclosure, using a compound of Formula 1a wherein Ris as defined in the disclosure, prepared by the aforesaid method for preparing a compound of Formula 1. (Formula 3) (Formula 4).