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. 10, 2012
Filed:
Jun. 27, 2007
Richard F. Davis, Bear, DE (US);
Rafael Shapiro, Wilmington, DE (US);
Eric G. Taylor, Newark, DE (US);
Richard F. Davis, Bear, DE (US);
Rafael Shapiro, Wilmington, DE (US);
Eric G. Taylor, Newark, DE (US);
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
Disclosed is a method for preparing a compound of Formula 1 by contacting compound of Formula 2 with R—NHin the presence of a carboxylic acid and a method for preparing a compound of Formula 2 by contacting a compound of Formula 4 with phosphorus tribromide. wherein Ris H, C-Calkyl, cyclopropyl, cyclopropylmethyl or methylcyclopropyl; Ris CHor Cl; Ris C-Calkyl or C-Calkenyl, each optionally substituted with up to 3 halogen and up to 1 phenyl; and X is Cl or Br. Also disclosed is a method for preparing a compound of Formula 5 wherein R, R, Rand Z are as defined in the disclosure,using a compound of Formula 1 that is characterized by preparing the compound of Formula 1 by the method above.