Title:
METHOD FOR PRODUCING METHYLENE-DISULFONIC ACID COMPOUND
Document Type and Number:
WIPO Patent Application WO/2015/064712
Kind Code:
A1
Abstract:
The purpose of the present invention is to efficiently produce a methylene-disulfonic acid compound by using a carboxylic acid chloride compound and by using an industrially advantageous method. Provided is a method for producing a methylene-disulfonic acid compound represented by formula (3) (in formula (3), R1 and R2 are the same as R1 and R2 in formula (1)) includes the following: (A) a step of reacting a carboxylic acid halide compound represented by formula (1): R1R2CHCOX (1) (in formula (1), R1 and R2 are each independently a hydrogen atom or a C1-C4 alkyl group in which a hydrogen atom may be substituted with a halogen atom, and X is a halogen atom) with chlorosulfonic acid; and (B) a step of mixing water with the reaction liquid obtained in step (A).
Inventors:
MURAKAMI SHINYA (JP)
HACHIKEN SATOSHI (JP)
HIYAMA TAKEHIRO (JP)
HACHIKEN SATOSHI (JP)
HIYAMA TAKEHIRO (JP)
Application Number:
PCT/JP2014/078961
Publication Date:
May 07, 2015
Filing Date:
October 30, 2014
Export Citation:
Assignee:
SUMITOMO SEIKA CHEMICALS (JP)
International Classes:
C07C303/02; C07C309/05; C07D327/00
Domestic Patent References:
| WO2007125736A1 | 2007-11-08 |
Foreign References:
| JP2013203698A | 2013-10-07 | |||
| JP2012131724A | 2012-07-12 | |||
| JP2014062076A | 2014-04-10 |
Other References:
SONNTAG,N.O.: "The reactions of aliphatic acid chlorides", CHEMICAL REVIEWS, vol. 52, 1953, WASHINGTON, DC, UNITED STATES, pages 237 - 416
Attorney, Agent or Firm:
SAEGUSA & PARTNERS (JP)
Patent business corporation 3 Edakuni [Hajime] patent firm (JP)
Patent business corporation 3 Edakuni [Hajime] patent firm (JP)
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