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. 02, 1987
Filed:
Sep. 10, 1985
Nippon Chemicals Co., Ltd., Tokyo, JP;
Abstract
A method for the production of an .alpha.-aryl-alkanoic acid represented by the general formula II: ##STR1## wherein R.sup.3 stands for a hydrogen atom or an alkyl group and Ar for an aromatic residue, characterized by subjecting an .alpha.-haloalkyl-aryl ketal represented by the general formula I: ##STR2## wherein Ar has the same meaning as defined above, R.sup.1 and R.sup.2 independently stand for an alkyl group and embrace the case wherein they jointly form a cyclic acetal, R.sup.3 has the same meaning as defined above, and X stands for a halogen atom to a rearrangement reaction in the presence of at least one zinc compound selected from the group consisting of oxide, hydroxide, sulfide, carbonate, and basic carbonate of zinc and subsequently hydrolyzing the product of said rearrangement reaction.