Invention Grant
- Patent Title: Method for producing cyclic disulfonic acid ester
- Patent Title (中): 环状二磺酸酯的制备方法
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Application No.: US12304409Application Date: 2007-06-14
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Publication No.: US08742136B2Publication Date: 2014-06-03
- Inventor: Kuniaki Okamoto , Tsutomu Watahiki , Motoshige Sumino
- Applicant: Kuniaki Okamoto , Tsutomu Watahiki , Motoshige Sumino
- Applicant Address: JP Osaka
- Assignee: Wako Pure Chemical Industries, Ltd.
- Current Assignee: Wako Pure Chemical Industries, Ltd.
- Current Assignee Address: JP Osaka
- Agency: Hamre, Schumann, Mueller & Larson, P.C.
- Priority: JP2006-168643 20060619
- International Application: PCT/JP2007/061998 WO 20070614
- International Announcement: WO2007/148597 WO 20071227
- Main IPC: C07D327/00
- IPC: C07D327/00

Abstract:
It is an object of the present invention to provide a commercially advantageous method for producing a cyclic disulfonic acid ester with high yield, the present invention discloses a method for producing a cyclic disulfonic acid ester represented by the general formula (3), which comprises reacting a silver alkanedisulfonate represented by the general formula (1) with a dihaloalkane represented by the general formula (2) in a nonpolar solvent. Wherein X1 and X2 are each independently a chlorine atom, a bromine atom or an iodine atom; and Y and Z are each independently a substituted or unsubstituted alkylene chain which may have a heteroatom in the chain.
Public/Granted literature
- US20090281333A1 METHOD FOR PRODUCING CYCLIC DISULFONIC ACID ESTER Public/Granted day:2009-11-12
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