Ihara Chemical Industry Co.

Tokyo, Japan

Ihara Chemical Industry Co.

Tokyo, Japan
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Patent
Ihara Chemical Industry Co. and Kumiai Chemical Industry Co. | Date: 2015-06-24

Problem to be Solved It is intended to provide an industrially preferable fluoroalkylating agent and use thereof. Solution The present invention provides a fluoroalkylating agent represented by the general formula (1) wherein R^(1 )is a C1 to C8 fluoroalkyl group; R^(2 )and R^(3 )are each independently a C1 to C12 alkyl group or the like; Y^(1 )to Y^(4 )are each independently a hydrogen atom, a halogen atom, or the like; and X^() is a monovalent anion. A compound of the general formula (3): R^(4)SR^(1 )having an introduced C1 to C8 fluoroalkyl group is easily obtained by reacting a compound of the general formula (2): R^(4)SZ wherein R^(4 )is a hydrocarbon group or the like; and Z is a leaving group, with the compound of the general formula (1).


Patent
Ihara Chemical Industry Co. | Date: 2017-02-08

[Problem to be Solved] To provide an industrially preferred process for producing an isothiazole compound which avoids the simultaneous use of N,N-dimethylformamide or the like and chlorine. [Solution] A process for producing an isothiazole compound represented by a general formula (3)which comprises introducing a halogen represented by a general formula (2)X(2)(wherein X is as defined above)into a nitrile compound represented by a general formula (1)and sulfur at 70C or more in the presence of an ether compound represented by a general formula (7)R(7)(wherein R^(1) and R^(2) are the same or different and each represent an alkyl group or the like)to carry out a reaction between the nitrile compound, the sulfur and the halogen.


Patent
Ihara Chemical Industry Co. and Kumiai Chemical Industry Co. | Date: 2017-05-03

Problem to be Solved It is intended to provide an industrially preferable fluoroalkylating agent and use thereof. Solution The present invention provides a fluoroalkylating agent represented by the general formula (1) wherein R^(1) is a C1 to C8 fluoroalkyl group; R^(2) and R^(3) are each independently a C1 to C12 alkyl group or the like; Y^(1) to Y^(4) are each independently a hydrogen atom, a halogen atom, or the like; and X^(-) is a monovalent anion. A compound of the general formula (3): R^(4)-S-R^(1) having an introduced C1 to C8 fluoroalkyl group is easily obtained by reacting a compound of the general formula (2): R^(4)-S-Z wherein R^(4) is a hydrocarbon group or the like; and Z is a leaving group, with the compound of the general formula (1).


Patent
Ihara Chemical Industry Co. | Date: 2015-03-20

An electrode catalyst obtained by calcining a metal phthalocyanine polymer having a repeating structural unit obtained by the amide bonding of a structural unit represented by general formula (1a) to a structural unit represented by general formula (2a) to form a calcined body, then treating the calcined body with an acid. Formula (1a) (wherein L is a divalent or trivalent metal ion belonging to Period 3 to Period 5 on the long-form periodic table.) Formula (2a) (wherein M is a divalent or trivalent metal ion belonging to Period 3 to Period 5 on the long-form periodic table.)


Patent
Kumiai Chemical Industry Co. and Ihara Chemical Industry Co. | Date: 2016-04-05

An alkyl phenyl sulfide derivative represented by the general formula [I] or an agriculturally acceptable salt thereof, and a pest control agent containing the derivative or the salt as an active ingredient. [in the above formula, R^(1 )is, for example, a C_(1)C_(6 )alkyl group which is mono- or poly-substituted with halogen atom; R^(2 )is, for example, a halogen atom or a C_(1)C_(6 )alkyl group; R^(3 )is, for example, a hydrogen atom or a halogen atom; and R^(4 )is, for example, a hydrogen atom or a C_(1)C_(12 )alkyl group.] The derivative or the salt has an excellent pest control effect.


Patent
Kumiai Chemical Industry Co. and Ihara Chemical Industry Co. | Date: 2015-02-25

An alkyl phenyl sulfide derivative represented by the general formula [I] or an agriculturally acceptable salt thereof, and a pest control agent containing the derivative or the salt as an active ingredient.^(1) is, for example, a C_(1)C_(6) alkyl group which is mono- or poly-substituted with halogen atom; R^(2) is, for example, a halogen atom or a C_(1)C_(6) alkyl group; R^(3) is, for example, a hydrogen atom or a halogen atom; and R^(4) is, for example, a hydrogen atom or a C_(1)C_(12) alkyl group.] The derivative or the salt has an excellent pest control effect.


The objective of the present invention is to provide an economically advantageous and industrially suitable method for manufacturing a 2-amino-2-hydroxyimino-N-alkoxy acetoimidoyl cyanide represented by general formula (3). [Solution] The present invention enables the safe, high-yield manufacture of the compound represented by general formula (3) (wherein R represents a C3-C6 alkyl group), that is a 2-amino-2-hydroxyimino-N-alkoxy acetoimidoyl cyanide, by reacting the malononitrile represented by formula (1) with an alkali metal salt of nitrous acid in the presence of a protonic acid, and then, after reacting the product with a C3-C6 alkyl halide in the presence of a phase transfer catalyst, reacting the obtained compound represented by novel general formula (2) (wherein R is the same as above), that is a 2-alkoxyimino propane dinitrile, with a hydroxyl amino compound.


Patent
Ihara Chemical Industry Co. | Date: 2015-02-06

The purpose of the present invention is to provide a method for continuously producing a ketomalonic acid compound such as a ketomalonic acid diester or a hydrate thereof, which is an industrially useful compound, on an industrial scale and in a safe and steady manner. The present invention relates to: a method in which a malonic acid diester, a carboxylic acid compound and a chlorous acid compound are used as raw material compounds, and these raw material compounds are mixed together to prepare a mixture and the mixture is supplied to a flow reactor continuously, thereby continuously producing a corresponding ketomalonic acid diester or a hydrate thereof; and a continuous production apparatus for performing the method.


Patent
Ihara Chemical Industry Co. | Date: 2016-05-04

The purpose of the present invention is to provide an economically favorable, industrialization-suitable method for manufacturing nitrobenzene compounds of general formula (1). A method for manufacturing nitrobenzene compounds of general formula (1):^(1) represents a halogen atom; R^(2), R^(3), and R^(4) represent a hydrogen atom, etc.; and R^(5) represents a halogen atom or alkoxy carbonyl group), the method including the following processes: (i) a process for reacting aniline compounds of general formula (2):^(1), R^(2), R^(3), R^(4), and R^(5) are as previously defined.) in the presence of a metal salt of nitrous acid and an acid, and (ii) a process for reacting the product of process (i) in the presence of a metal salt of nitrous acid and a copper compound; and the total amount of water used in process (ii) being 1.2-2.2 L (liters) with respect to one mole of the compound of general formula (2).


Patent
Ihara Chemical Industry Co. | Date: 2016-05-25

Provided is a method for producing an industrially useful ketomalonic acid compound such as ketomalonic acid diesters, or a hydrate thereof, by a method more favorable from an economic and environmental standpoint and from a safety standpoint. The present invention relates to a method involving reacting a malonic acid compound represented by general formula (1)

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