logo

For the Inventor, By the Inventor

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.:

US 6660869 B1

PDFFull Text
Expired
Date of Patent:
Dec. 09, 2003

Filed:

Jan. 10, 2002

Preparation of an aromatic bisoxazoline

Applicant:
Inventors:

Rudolfus A. T. M. Van Benthem, Limbricht, NL;

Jacobus A. Loontjens, Meerssen, NL;

Patrick H. M. Hendriks, Beek, NL;

Bartholomeus J. M. Plum, Ulestraten, NL;

Assignee:

DSM N.V., Heerlen, NL;

Attorney:

Pillsbury Winthrop LLP

Primary Examiner:

Joseph K McKane

Assistant Examiner:

Kamal Saeed

Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
C07D / ;
Abstract

The invention relates to a process for the preparation of an aromatic bisoxazoline in which, in a first step, an aromatic carboxylic acid or an ester hereof reacts with an alkanolamine, after which the hydroxyalkylamide obtained is in a second step converted into an aromatic bisoxazoline in the presence of a catalyst. The catalyst is phosphinic acid, a (C -C ) alkyl phosphinic acid, a (C -C )aryl phosphinic acid or an ester or an anhydride derived from one of these acids.

Find Patent Forward Citations

Van Benthem, Rudolfus A. T. M.. (2003). Preparation of an aromatic bisoxazoline (U.S. Patent No. 6660869). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6660869

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…