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:
Jun. 10, 2014
Filed:
Dec. 05, 2007
Joerg Bruening, Wilmington, DE (US);
Albert Loren Casalnuovo, Wilmington, DE (US);
Vladimir Grushin, Hockessin, DE (US);
Joerg Bruening, Wilmington, DE (US);
Albert Loren Casalnuovo, Wilmington, DE (US);
Vladimir Grushin, Hockessin, 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 comprising contacting a compound of Formula 2 with at least one compound of Formula 3 in the presence of a solvent comprising one or more organic solvents selected from ethers and nitriles and a catalytically effective amount of a palladium complex comprising at least one tertiary phosphine ligand of Formula 4 wherein Ris NHRor OR; Ris CHor Cl; Ris H, alkyl, cyclopropyl, cyclopropylmethyl or methylcyclopropyl; Ris H or C-Calkyl; Mis an alkali metal; and R, Rand Rare defined in the disclosure; provided that when Ris Cl, then X is 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 characterized by preparing the compound of Formula 1 by the aforedescribed method.