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. 13, 2007
Filed:
Feb. 06, 2006
Akihiro Ishii, Kawagoe, JP;
Masatomi Kanai, Kawagoe, JP;
Yokusu Kuriyama, Kawagoe, JP;
Manabu Yasumoto, Kawagoe, JP;
Kenjin Inomiya, Kawagoe, JP;
Takashi Ootsuka, Kawagoe, JP;
Koji Ueda, Kawagoe, JP;
Akihiro Ishii, Kawagoe, JP;
Masatomi Kanai, Kawagoe, JP;
Yokusu Kuriyama, Kawagoe, JP;
Manabu Yasumoto, Kawagoe, JP;
Kenjin Inomiya, Kawagoe, JP;
Takashi Ootsuka, Kawagoe, JP;
Koji Ueda, Kawagoe, JP;
Central Glass Company, Limited, Ube, JP;
Abstract
A process for producing a brominated acetal (represented by the formula 3) includes (a) brominating a trifluoromethyl-substituted acetophenone by Brin the presence of an alkylene diol. It is optional to produce a trifluoromethyl-substituted 2-alkoxyacetophenone derivative (represented by the formula 9) by (b) reacting the brominated acetal with a metal alkoxide, thereby converting the brominated acetal into an ether; and (c) hydrolyzing the ether in the presence of an acid catalyst to remove an acetal group from the ether, thereby producing the 2-alkoxyacetophenone derivative. Alternatively, the 2-alkoxyacetophenone can be produced by (a) reacting a trifluoromethyl-substituted phenacyl halide with an acetalization agent, thereby converting the phenacyl halide into an acetal; (b) reacting the acetal with a metal alkoxide, thereby converting the acetal into an ether; and (c) hydrolyzing the ether in the presence of an acid catalyst to remove the acetal group from the ether