METHOD FOR PRODUCING HALOGENATED ACRYLIC ACID DERIVATIVE

摘要

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):;

主权项

1. A method for producing an ethene derivative represented by the following formula (2), which comprises subjecting a compound represented by the following formula (1) and having a boiling point of at most 500° C. to R3OH removal reaction in a vapor phase in the presence of a solid catalyst: 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 the 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; wherein R1, R2, R4 and R5 are as defined above.