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. 05, 2009
Filed:
May. 16, 2007
Hans-rené Bjørsvik, Bergen, NO;
Hans-René Bjørsvik, Bergen, NO;
Bergen Teknologioverforing AS, Bergen, NO;
Abstract
The present invention discloses a new process for the preparation of 1,4-benzoquiones of formula (II) wherein R, R, Rand Rare independently selected from the group consisting of branched or unbranched C-Calkyl, phenyl and benzyl, wherein phenyl and benzyl is optionally substituted by one or more substituent independently selected from the group consisting of C-Calkyl and halogen, and wherein C-Calkyl is optionally substituted with one or more halogen susbstituents, and wherein Rand Rtogether can form a C-C-alkylene radical, optionally substituted by one or more susbstituents independently selected from the group comprising C-C, benzyl, phenyl and halogen. One preferred compound is 2,3-dimethoxy-5-methyl-[1,4]benzoquinone, also known as coenzyme Q(CoQ). Also disclosed are novel compounds and intermediates, and a method for the preparation of coenzyme Q, preferable the coenzyme Q. Also disclosed is a method for continuous synthesis of 1,4-benzoquiones in a continuous flow reactor.