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:
Jul. 10, 2001
Filed:
Jun. 21, 1999
Andrew John Blacker, Huddersfield, GB;
Jan Michael Fielden, Huddersfield, GB;
Zeneca Limited, London, GB;
Abstract
A process for the preparation of an aromatic organozinc compound is provided. The process comprises reacting a zinc chloride, bromide or iodide and an organometallic compound of another metal comprising an aromatic moiety, producing a reaction product comprising an organozinc compound and a halide salt of the other metal. The reaction product is then contacted with a liquid hydrocarbon, in which the organozinc compound is soluble and the halide salt of the other metal is of low solubility. The halide salt of the other metal is separated from the hydrocarbon, and the organozinc compound can be recovered from the hydrocarbon. Organozinc compounds produced by this process can be employed to generate chiral centres in suitable substrates.