Patents by Inventor Ryo Aizawa
Ryo Aizawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10442768Abstract: The present invention provides a method for producing a 2-aminonicotinic acid benzyl ester derivative. The method includes, as a step, reacting a 2-aminonicotinic acid derivative represented by the formula [I], wherein R1 represents a hydrogen atom or a C1 to C4 alkyl group and M represents an alkali metal, with a benzyl derivative represented by the formula [II], wherein R2 represents, for example, a hydrogen atom or a halogen atom, A represents, for example, a nitrogen atom, X represents a halogen atom, and Y represents, for example, an oxygen atom, in an aromatic hydrocarbon solvent in the presence of a phase transfer catalyst or a tertiary amine.Type: GrantFiled: November 8, 2016Date of Patent: October 15, 2019Assignee: AGRO-KANESHO CO., LTD.Inventors: Ryo Aizawa, Koichi Araki
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Publication number: 20180362464Abstract: The present invention provides a method for producing a 2-aminonicotinic acid benzyl ester derivative. The method includes, as a step, reacting a 2-aminonicotinic acid derivative represented by the formula [I], wherein R1 represents a hydrogen atom or a C1 to C4 alkyl group and M represents an alkali metal, with a benzyl derivative represented by the formula [II], wherein R2 represents, for example, a hydrogen atom or a halogen atom, A represents, for example, a nitrogen atom, X represents a halogen atom, and Y represents, for example, an oxygen atom, in an aromatic hydrocarbon solvent in the presence of a phase transfer catalyst or a tertiary amine.Type: ApplicationFiled: November 8, 2016Publication date: December 20, 2018Applicant: AGRO-KANESHO CO., LTD.Inventors: Ryo AIZAWA, Koichi ARAKI
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Patent number: 9902697Abstract: The present invention provides a method for producing 2-amino-6-methylnicotinic acid represented by formula [I], wherein the production method comprises: (a) reacting 2-chloro-3-cyano-6-methylpyridine represented by formula [II] in an ammonia aqueous solution to obtain a reaction solution containing 2-amino-6-methylnicotinamide represented by formula [III]; and (b) removing the ammonia from the reaction solution, then reacting the 2-amino-6-methylnicotinamide represented by formula [III]with a base to produce 2-amino-6-methylnicotinic acid represented by formula [I].Type: GrantFiled: June 27, 2014Date of Patent: February 27, 2018Assignee: AGRO-KANESHO CO., LTD.Inventors: Ryo Aizawa, Koichi Araki
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Patent number: 9783480Abstract: Provided is a method that can produce phenyl(meth)acrylate inexpensively and at high yields. The phenyl(meth)acrylate production method of the present invention reacts (meth)acrylic acid with carbonic acid diphenyl. Further, the phenyl(meth)acrylate composition of the present invention contains 90-99.999 wt % phenyl(meth)acrylate and 0.001-10% carbonic acid diphenyl. Or, the phenyl(meth)acrylate composition of the present invention contains 90-99.999 wt % phenyl(meth)acrylate and 0.001-10 wt % of a specified compound.Type: GrantFiled: October 4, 2016Date of Patent: October 10, 2017Assignee: Mitsubishi Chemical CorporationInventors: Ryo Aizawa, Takeshi Matsuo, Naoshi Murata, Hiroyuki Mori
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Patent number: 9771315Abstract: Provided is a method that can produce phenyl(meth)acrylate inexpensively and at high yields. The phenyl(meth)acrylate production method of the present invention reacts (meth)acrylic acid with carbonic acid diphenyl. Further, the phenyl(meth)acyrlate composition of the present invention contains 90-99.999 wt % phenyl(meth)acrylate and 0.001-10% carbonic acid diphenyl. Or, the phenyl(meth)acrylate composition of the present invention contains 90-99.999 wt % phenyl(meth)acrylate and 0.001-10 wt % of a specified compound.Type: GrantFiled: October 24, 2014Date of Patent: September 26, 2017Assignee: Mitsubishi Chemical CorporationInventors: Ryo Aizawa, Takeshi Matsuo, Naoshi Murata, Hiroyuki Mori
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Patent number: 9714223Abstract: The present invention provides a method for producing 2-amino-6-methylnicotinic acid represented by formula [I], wherein the production method comprises: (a) reacting 2-chloro-3-cyano-6-methylpyridine represented by formula [II] in an ammonia aqueous solution to obtain a reaction solution containing 2-amino-6-methylnicotinamide represented by formula [III]; and (b) removing the ammonia from the reaction solution, then reacting the 2-amino-6-methylnicotinamide represented by formula [III]with a base to produce 2-amino-6-methylnicotinic acid represented by formula [I].Type: GrantFiled: June 27, 2014Date of Patent: July 25, 2017Assignee: AGRO-KANESHO CO., LTD.Inventors: Ryo Aizawa, Koichi Araki
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Patent number: 9695124Abstract: The present invention provides a method of producing a 2-aminonicotinic acid benzyl ester derivative at a high yield and with a high purity. By reacting a benzyl halide derivative with a 2-aminonicotinic acid derivative in a polar solvent in the presence of a prescribed base, it is possible to obtain a 2-aminonicotinic acid benzyl ester derivative at a high yield and with a high purity.Type: GrantFiled: December 27, 2013Date of Patent: July 4, 2017Assignee: AGRO-KANESHO CO., LTD.Inventors: Ryo Aizawa, Itaru Okada
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Publication number: 20170129858Abstract: The present invention provides a method for producing 2-amino-6-methylnicotinic acid represented by formula [I], wherein the production method comprises: (a) reacting 2-chloro-3-cyano-6-methylpyridine represented by formula [II] in an ammonia aqueous solution to obtain a reaction solution containing 2-amino-6-methylnicotinamide represented by formula [III]; and (b) removing the ammonia from the reaction solution, then reacting the 2-amino-6-methylnicotinamide represented by formula [III]with a base to produce 2-amino-6-methylnicotinic acid represented by formula [I].Type: ApplicationFiled: June 27, 2014Publication date: May 11, 2017Applicant: AGRO-KANESHO CO., LTD.Inventors: Ryo AIZAWA, Koichi ARAKI
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Publication number: 20170022136Abstract: Provided is a method that can produce phenyl(meth)acrylate inexpensively and at high yields. The phenyl(meth)acrylate production method of the present invention reacts (meth)acrylic acid with carbonic acid diphenyl. Further, the phenyl(meth)acrylate composition of the present invention contains 90-99.999 wt % phenyl(meth)acrylate and 0.001-10% carbonic acid diphenyl. Or, the phenyl(meth)acrylate composition of the present invention contains 90-99.999 wt % phenyl(meth)acrylate and 0.001-10 wt % of a specified compound.Type: ApplicationFiled: October 4, 2016Publication date: January 26, 2017Applicant: MITSUBISHI RAYON CO., LTD.Inventors: Ryo Aizawa, Takeshi Matsuo, Naoshi Murata, Hiroyuki Mori
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Publication number: 20160318868Abstract: The present invention provides a method of producing a 2-aminonicotinic acid benzyl ester derivative at a high yield and with a high purity. By reacting a benzyl halide derivative with a 2-aminonicotinic acid derivative in a polar solvent in the presence of a prescribed base, it is possible to obtain a 2-aminonicotinic acid benzyl ester derivative at a high yield and with a high purity.Type: ApplicationFiled: December 27, 2013Publication date: November 3, 2016Applicant: AGRO-KANESHO CO., LTD.Inventors: Ryo AIZAWA, Itaru OKADA
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Publication number: 20160244396Abstract: Provided is a method that can produce phenyl(meth)acrylate inexpensively and at high yields. The phenyl(meth)acrylate production method of the present invention reacts (meth)acrylic acid with carbonic acid diphenyl. Further, the phenyl(meth)acyrlate composition of the present invention contains 90-99.999 wt % phenyl(meth)acrylate and 0.001-10% carbonic acid diphenyl. Or, the phenyl(meth)acrylate composition of the present invention contains 90-99.999 wt % phenyl(meth)acrylate and 0.001-10 wt % of a specified compound.Type: ApplicationFiled: October 24, 2014Publication date: August 25, 2016Applicant: MITSUBISHI RAYON CO., LTD.Inventors: Ryo AIZAWA, Takeshi MATSUO, Naoshi MURATA, Hiroyuki MORI
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Patent number: 9096528Abstract: The present invention provides a bactericide containing a 2-aminonicotinic acid ester derivative as an active ingredient. The active ingredient is represented by the following formula [I]: (wherein, R1 represents a hydrogen atom or a C1-C4 alkyl group, R2 represents a hydrogen atom or a C1-C4 alkyl group, R1 and R2 may be combined together to form an alkylene chain, R3 represents a hydrogen atom or a C1-C4 alkyl group, R4 represents a hydrogen atom, a cyano group or a C1-C4 alkyl group, R5 and R6 independently represent a hydrogen atom, a halogen atom, a C1-C4 alkyl group, a C1-C4 alkoxy group, a C1-C4 alkylthio group, a C1-C4 alkylsulfinyl group, a C1-C4 alkylsulfonyl group, a nitro group, a cyano group, a C1-C4 haloalkyl group, a C1-C4 haloalkoxy group or a C1-C4 haloalkylthio group, A and B independently represent a methine (CH) group or a nitrogen atom).Type: GrantFiled: April 2, 2013Date of Patent: August 4, 2015Assignee: AGRO-KANESHO CO., LTD.Inventors: Ryo Aizawa, Itaru Okada, Toshiki Fukuchi, Masahiro Hatamoto
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Publication number: 20150175551Abstract: The present invention provides a bactericide containing a 2-aminonicotinic acid ester derivative as an active ingredient. The active ingredient is represented by the following formula [I]: (wherein, R1 represents a hydrogen atom or a C1-C4 alkyl group, R2 represents a hydrogen atom or a C1-C4 alkyl group, R1 and R2 may be combined together to form an alkylene chain, R3 represents a hydrogen atom or a C1-C4 alkyl group, R4 represents a hydrogen atom, a cyano group or a C1-C4 alkyl group, R5 and R6 independently represent a hydrogen atom, a halogen atom, a C1-C4 alkyl group, a C1-C4 alkoxy group, a C1-C4 alkylthio group, a C1-C4 alkylsulfinyl group, a C1-C4 alkylsulfonyl group, a nitro group, a cyano group, a C1-C4 haloalkyl group, a C1-C4 haloalkoxy group or a C1-C4 haloalkylthio group, A and B independently represent a methine (CH) group or a nitrogen atom).Type: ApplicationFiled: April 2, 2013Publication date: June 25, 2015Applicant: AGRO-KANESHO CO., LTD.Inventors: Ryo Aizawa, Itaru Okada, Toshiki Fukuchi, Masahiro Hatamoto