Abstract: A method may produce (2-methoxyethyl) vinyl ether with a high purity from 2-methoxyethanol and acetylene. Such a method may include the A1, A2, and A3: (A1) synthesizing a vinyl ether including causing 2-methoxyethanol to react with acetylene to obtain a mixture containing unreacted 2-methoxyethanol and (2-methoxyethyl) vinyl ether; (A2) acetalizing including causing a reaction of the unreacted 2-methoxyethanol and the (2-methoxyethyl) vinyl ether in the mixture in the presence of an acid catalyst to be converted into acetaldehyde bis(2-methoxyethyl)acetal; and (A3) removing the acetaldehyde bis(2-methoxyethyl)acetal by distillation from an acetal-containing mixture obtained in step A2.

Abstract: To provide a method capable of easily and efficiently removing a 2-alkoxyethanol from a mixture containing the 2-alkoxyethanol and a (2-alkoxyethyl) vinyl ether while suppressing a decrease in the yield of (2-alkoxyethyl) vinyl ether. A method for removing a 2-alkoxyethanol, including the step of adding one or more azeotropic solvents selected from the group consisting of alkanes having 7 to 8 carbon atoms and cycloalkanes having 7 to 8 carbon atoms to a mixture containing the 2-alkoxyethanol represented by the following formula (1) R—O—CH2CH2OH??(1) where R represents an alkyl group having 1 to 4 carbon atoms, and a (2-alkoxyethyl) vinyl ether represented by the following formula (2) R—O—CH2CH2O—CH?CH2??(2) where R has the same meaning as R in the formula (1), and subjecting the resulting mixture to azeotropic distillation.

Abstract: Provided is a method for producing an alkenyl phosphorus compound which can produce an alkenyl phosphorus compound efficiently even with a smaller amount of a catalyst used than that used conventionally, and further which can maintain catalytic activity to produce an alkenyl phosphorus compound in high yield even at a larger reaction scale, and which can also be applied to quantity synthesis at an industrial scale using a conventional batch reactor or continuous reactor. A method for producing an alkenyl phosphorus compound, comprising: a step of reacting a compound represented by the following formula (1): [In formula (1), R1 represents OR3 or R3, R2 represents OR4 or R4, and R3 and R4 represent, for example, each independently a substituted or unsubstituted alkyl group.] with a compound represented by the following formula (2): [In formula (2), R5 represents, for example, a hydrogen atom, or a substituted or unsubstituted alkyl group.

Abstract: Provided is a method for producing an alkenyl phosphorus compound which can produce an alkenyl phosphorus compound efficiently even with a smaller amount of a catalyst used than that used conventionally, and further which can maintain catalytic activity to produce an alkenyl phosphorus compound in high yield even at a larger reaction scale, and which can also be applied to quantity synthesis at an industrial scale using a conventional batch reactor or continuous reactor. A method for producing an alkenyl phosphorus compound, comprising: a step of reacting a compound represented by the following formula (1): [In formula (1), R1 represents OR3 or R3, R2 represents OR4 or R4, and R3 and R4 represent, for example, each independently a substituted or unsubstituted alkyl group.] with a compound represented by the following formula (2): R5—C?CH??(2) [In formula (2), R5 represents, for example, a hydrogen atom, or a substituted or unsubstituted alkyl group.

Abstract: To provide a method capable of easily and efficiently removing a 2-alkoxyethanol from a mixture containing the 2-alkoxyethanol and a (2-alkoxyethyl) vinyl ether while suppressing a decrease in the yield of (2-alkoxyethyl) vinyl ether. A method for removing a 2-alkoxyethanol, including the step of adding one or more azeotropic solvents selected from the group consisting of alkanes having 7 to 8 carbon atoms and cycloalkanes having 7 to 8 carbon atoms to a mixture containing the 2-alkoxyethanol represented by the following formula (1) R—O—CH2CH2OH??(1) where R represents an alkyl group having 1 to 4 carbon atoms, and a (2-alkoxyethyl) vinyl ether represented by the following formula (2) R—O—CH2CH2O—CH?CH2??(2) where R has the same meaning as R in the formula (1), and subjecting the resulting mixture to azeotropic distillation.

Abstract: A process for producing a high-purity vinyl ether, which comprises: a step of subjecting an alcohol represented by the general formula (1) R—O—H??(1) to a vinyl ether formation reaction in the presence of a catalyst to synthesize a vinyl ether represented by the general formula (2), R—O—CH?CH2??(2) a step of removing the catalyst from the reaction mixture obtained in the above step to obtain a crude vinyl ether containing the vinyl ether and the unreacted raw material alcohol, a step of reacting the unreacted raw material alcohol in the crude vinyl ether, with the vinyl ether in the presence of an acid catalyst, to convert the alcohol into an acetal represented by the general formula (3), and a step of subjecting a crude vinyl ether containing the acetal (III) to distillation to obtain a high-purity vinyl ether.