公开(公告)号：US10981857B2

公开(公告)日：2021-04-20

申请号：US16087369

申请日：2017-02-24

Applicant: AGC INC.

Inventor： Takashi Akiya ,  Mitsugu Kasagawa ,  Naoki Ichinokawa ,  Yu Onozaki ,  Satoshi Kawaguchi ,  Yusuke Tomiyori ,  Arata Yasuda

IPC: C07C43/313 ,  C07C67/00 ,  C07C67/62 ,  C07C69/653 ,  C07C41/48

Abstract: The present invention provides a production method of α-fluoroacrylate ester, a composition containing a highly-pure fluorocyclopropane derivative and a composition containing highly-pure α-fluoroacrylate ester. The present invention relates to a method of producing a compound represented by the following formula (F), including subjecting a composition containing a compound represented by the following formula (A) to a purification treatment in the order of distillation and washing with an aqueous alkali solution to give a purified product containing a compound represented by the following formula (A), and subjecting the purified product to a thermal decomposition reaction, a composition containing a highly-pure compound represented by the following formula (A), and a composition containing a highly-pure compound represented by the following formula (F), wherein R may be the same or different and is a monovalent hydrocarbon group, and X is a halogen atom:

公开(公告)号：US10252971B2

公开(公告)日：2019-04-09

申请号：US15055903

申请日：2016-02-29

Applicant: AGC Inc.

Inventor： Arata Yasuda ,  Mitsugu Kasagawa

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):