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. 12, 2009
Filed:
Dec. 17, 2003
Michael J. Elder, Rockville, MD (US);
Robert L. Jones, Frankfurt, DE;
Michael J. Elder, Rockville, MD (US);
Robert L. Jones, Frankfurt, DE;
Basell Polyolefine GmbH, Wesseling, DE;
Abstract
The present invention relates to a process for preparing heterocyclic ketones of the formulae (I) and (la), by reacting a heterocyclic compound of the formula (II), with an α, β-unsaturated carboxylic acid of the formula (III), or with its anhydride of the formula (IV), where Ris hydrogen or a C-Ccarbon-containing group, Ris hydrogen or a C-Ccarbon-containing group, or Rand Rtogether form a cyclic ring system, Ris a C-Ccarbon-containing group and X is an element of the 16th group of the Periodic Table or is a divalent nitrogen group —(N—R)—, where Ris an electron-withdrawing radical which is selected from the group consisting of perhalogenated C-Ccarbon-containing radicals and C-Corganosulfonyl groups.