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:
Sep. 16, 2014
Filed:
Oct. 15, 2009
Akihiro Ishii, Kawagoe, JP;
Manabu Yasumoto, Kawagoe, JP;
Akihiro Ishii, Kawagoe, JP;
Manabu Yasumoto, Kawagoe, JP;
Central Glass Company, Limited, Ube-shi, JP;
Abstract
Fluorosulfuric acid esters can be produced by reacting alcohols with sulfuryl fluoride (SOF) in the presence of a base and water. As a substrate thereof, optically active secondary alcohols are preferable, and optically active α-hydroxyesters and optically active 4-hydroxyprolines are particularly preferable. By performing the reaction in a two-phase system in the presence of a reaction solvent immiscible with water, a desired reaction proceeds particularly well. The present invention is a production method solving all the problems involved in conventional techniques while being industrially practicable.