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:
Feb. 18, 2014
Filed:
Sep. 24, 2009
Akihiro Ishii, Kawagoe, JP;
Manabu Yasumoto, Kawagoe, JP;
Takako Yamazaki, Kawagoe, JP;
Kaori Mogi, Kawagoe, JP;
Kazunori Mori, Iruma-gun, JP;
Takashi Masuda, Kawagoe, JP;
Akihiro Ishii, Kawagoe, JP;
Manabu Yasumoto, Kawagoe, JP;
Takako Yamazaki, Kawagoe, JP;
Kaori Mogi, Kawagoe, JP;
Kazunori Mori, Iruma-gun, JP;
Takashi Masuda, Kawagoe, JP;
Central Glass Company, Limited, Ube-shi, JP;
Abstract
An α-trifluoromethyl-α,β-unsaturated ester can be produced by reacting an α-trifluoromethyl-α-hydroxy ester with sulfuryl fluoride (SOF) in the presence of an organic base. It is preferable that the raw substrate has a hydrogen atom as one β-position substituent group and either an alkyl group, a substituted alkyl group, an alkenyl group, a substituted alkenyl group, an aromatic ring group or a substituted aromatic ring group as the other β-position substituent group. It is more preferable that an ester moiety of the raw substrate is an alkyl ester. This raw substrate is readily available. Further, the desired reaction can proceed favorably with the use of this raw substrate. It is also preferable to use either 1,5-diazabicyclo[4.3.0]non-5-ene (DBN) or 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) as the organic base. The desired reaction can proceed more favorably with the use of this organic base.