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:
Mar. 24, 1987
Filed:
Jun. 15, 1984
Applicant:
Inventor:
Patrick F King, North Quincy, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ; C07F / ; C09B / ;
U.S. Cl.
CPC ...
534651 ; 2605023 ; 2605 / ; 534588 ; 534682 ; 534726 ; 548110 ; 548146 ; 549-4 ; 549213 ; 549388 ; 549394 ; 549462 ; 560 19 ; 560 37 ; 560 38 ; 560 39 ; 560 41 ; 562433 ; 562443 ; 562444 ; 562450 ; 564171 ; 564174 ; 568630 ; 568631 ; 568644 ; 568735 ; 568943 ; 540128 ; 540132 ; 540133 ; 558291 ;
Abstract
A method for converting ether groups such as alkyl or aryl ether groups including hydroquinone ether groups to hydroxyl groups and ester groups such as alkyl or aryl ester groups to carboxylic acid groups which comprises reacting a compound including at least one ether and/or ester group with a 2-halo-1,3,2-benzodioxaborole to form an intermediate and hydrolyzing the intermediate such as by quenching it into water to form the desired final product.