METHOD FOR PURIFYING ACRYLIC ACID DERIVATIVE

Title:

METHOD FOR PURIFYING ACRYLIC ACID DERIVATIVE

Document Type and Number:

WIPO Patent Application WO/2017/026423

Kind Code:

A1

Abstract:

The present invention addresses the problem of providing a method for efficiently purifying an acrylic acid derivative (I), specifically, a method for efficiently eliminating an alcohol (II) from a composition containing the acrylic acid derivative (I) and the alcohol (II). The problem is solved by a method for purifying an acrylic acid derivative represented by formula (I) (where R1 and R2, which are the same or different, represent an alkyl group, a fluoroalkyl group, a halogen atom, a hydrogen atom, or an aryl group that optionally has at least one substituent; R3 represents an alkyl group, a fluoroalkyl group, a hydrogen atom, or an aryl group that optionally has at least one substituent; and X represents an alkyl group, a fluoroalkyl group, a halogen atom, or a hydrogen atom), said method containing a step A in which a composition A containing the acrylic acid derivative represented by formula (I) and an alcohol represented by formula (II): R4-OH (where R4 represents a C1-6 alkyl group) is brought into contact with an acid anhydride, and the alcohol is converted into an ester compound having a boiling point that is higher than the boiling point of the acrylic acid derivative represented by formula (I).

Inventors:

MATSUURA MAKOTO
KISHIKAWA YOSUKE
YOSHIYAMA ASAKO

Application Number:

PCT/JP2016/073208

Publication Date:

February 16, 2017

Filing Date:

August 05, 2016

Export Citation:

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Assignee:

DAIKIN IND LTD (JP)

International Classes:

C07C67/54; C07C67/62; C07C69/54; C07C69/653

Domestic Patent References:

WO2005102983A1

2005-11-03

Foreign References:

JPH05194321A	1993-08-03
JP2011231133A	2011-11-17
JP2011516590A	2011-05-26
JP2005527515A	2005-09-15
JP2014520102A	2014-08-21

Other References: