Invention Grant
- Patent Title: Method for producing halogenated acrylic acid derivative
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Application No.: US15055903Application Date: 2016-02-29
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Publication No.: US10252971B2Publication Date: 2019-04-09
- Inventor: Arata Yasuda , Mitsugu Kasagawa
- Applicant: AGC Inc.
- Applicant Address: JP Chiyoda-ku
- Assignee: AGC Inc.
- Current Assignee: AGC Inc.
- Current Assignee Address: JP Chiyoda-ku
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2015-168339 20150827
- Main IPC: C07C67/00
- IPC: C07C67/00 ; C07C43/313 ; C07C43/32 ; C07C41/50 ; C07C41/54

Abstract:
To provide a novel method for producing a halogenated acrylic acid derivative.A compound represented by the formula (1): (wherein each of R1 and R2 which are independent of each other, is a hydrogen atom or a monovalent group essentially containing a carbon atom, or R1 and R2 together form a ring, R3 is a monovalent group capable of being desorbed by R3OH removal reaction, and each of R4 and R5 which are independent of each other, is a hydrogen atom or a monovalent group essentially containing a carbon atom) and having a boiling point of at most 500° C., is subjected to R3OH removal reaction in a vapor phase in the presence of a solid catalyst to obtain an ethene derivative represented by the formula (2): the ethene derivative represented by the formula (2) and a halogenated methane represented by the formula (3): CHXYZ (3) (wherein each of X, Y and Z which are independent of one another, is a halogen atom) are reacted in the presence of a basic compound and a phase transfer catalyst, to obtain a cyclopropane derivative represented by the formula (4): and the cyclopropane derivative represented by the formula (4) is reacted by heating in a liquid phase or in a vapor phase to obtain a halogenated acrylic acid ester derivative represented by the formula (5):
Public/Granted literature
- US20170057902A1 METHOD FOR PRODUCING HALOGENATED ACRYLIC ACID DERIVATIVE Public/Granted day:2017-03-02
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