公开(公告)号：US20200290024A1

公开(公告)日：2020-09-17

申请号：US16084043

申请日：2017-02-15

Applicant: N.E. CHEMCAT CORPORATION

Inventor： Tomoteru Mizusaki ,  Hiroyasu Suzuka ,  Yusuke Nakaya ,  Yoshiyuki Wada ,  Yukio Takagi

IPC: B01J23/89 ,  C07C209/36

Abstract: Provided is a catalyst mixture which, in a nitro group hydrogenation reaction of an aromatic nitro compound having a structure in which nitro groups and halogen atoms are directly bonded as substituents to a ring skeleton of the same ring while separated from each other, is capable of selectively hydrogenating the nitro groups and sufficiently reducing the removal of the halogen atoms from the ring. This catalyst mixture includes a catalyst which is used in a hydrogenation reaction of at least one among one or more nitro groups present in a reactant, which is an aromatic nitro compound having a structure in which one or more nitro groups and one or more halogen atoms are directly bonded as substituents to a ring skeleton of the same ring while separated from each other. This catalyst mixture further includes a base.

公开(公告)号：US09707544B2

公开(公告)日：2017-07-18

申请号：US15135958

申请日：2016-04-22

Applicant: Osaka University ,  N.E. Chemcat Corporation

Inventor： Kiyotomi Kaneda ,  Yukio Takagi

IPC: C07C1/247 ,  C07C29/141 ,  B01J37/02 ,  B01J37/03 ,  B01J21/10 ,  B01J23/50 ,  B01J23/58 ,  B01J23/63 ,  B01J23/66 ,  B01J23/00 ,  B01J27/232 ,  B01J35/00

CPC classification number: B01J23/66 ,  B01J23/007 ,  B01J27/232 ,  B01J35/0013 ,  B01J35/006 ,  B01J35/0086 ,  B01J37/0236 ,  B01J37/035 ,  B01J2523/00 ,  C07C1/247 ,  C07C29/141 ,  C07C2523/10 ,  C07C2523/50 ,  C07C2523/66 ,  B01J2523/18 ,  B01J2523/22 ,  B01J2523/31 ,  B01J2523/3712 ,  B01J2523/23 ,  C07C33/32 ,  C07C15/52

Abstract: Conventionally, a silver-cerium oxide composite containing a silver particle and cerium oxide covering the surface of the silver particle has been synthesized through a multi-stage process, and is disadvantageous not only in that there is a need to use an organic solvent and a surfactant, causing the time and cost to be increased, but also in that there is a possibility that fulminating silver is formed, leading to a problem about the safety. A method for producing a catalyst having a silver-cerium oxide composite and an alkaline carrier having supported thereon the oxide composite, the silver-cerium oxide composite containing a silver particle and cerium oxide covering the surface of the silver particle, the method having preparing a mixture containing a silver compound, a cerium compound, and an alkaline carrier, and drying the mixture is provided.

公开(公告)号：US12187691B2

公开(公告)日：2025-01-07

申请号：US17433126

申请日：2020-02-20

Applicant: OSAKA UNIVERSITY ,  N.E. CHEMCAT CORPORATION

Inventor： Kiyotomi Kaneda ,  Takato Mitsudome ,  Miho Kimura ,  Yukio Takagi ,  Yosuke Imanaka ,  Hiroyasu Suzuka ,  Tatsuya Kojima

IPC: C07D295/023 ,  B01J27/18 ,  B01J27/19 ,  B01J37/02 ,  B01J37/04 ,  C07D487/04

Abstract: Provided is a catalyst for amide compound hydrogenation characterized in that rhodium and molybdenum are supported on hydroxyapatite, the catalyst for amide compound hydrogenation providing a catalyst that can promote a reduction reaction that converts an amide compound into an amine compound, can be used under moderate conditions, and has durability that allows repeated use thereof while retaining high activity. Also provided is a method for producing an amine compound, the method being characterized by including bringing an amide compound into contact with the catalyst for amide compound hydrogenation to cause hydrogenation, thereby producing an amine compound.

公开(公告)号：US20220032278A1

公开(公告)日：2022-02-03

申请号：US17490143

申请日：2021-09-30

Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY ,  N.E. CHEMCAT CORPORATION

Inventor： Junchul Choi ,  Norihisa Fukaya ,  Shunya Onozawa ,  Kazuhiko Sato ,  Hiroyuki Yasuda ,  Tomoteru Mizusaki ,  Yukio Takagi

IPC: B01J31/22

Abstract: An organometallic complex catalyst that makes it possible to obtain a higher yield of a desired product than conventional catalysts in a cross-coupling reaction. The organometallic complex catalyst has a structure represented by formula (1) and is for use in a cross-coupling reaction. In formula (1), M is the coordination center and represents a metal atom such as Pd or an ion thereof. R1, R2, and R3 may be the same or different and are a substituent such as a hydrogen atom. R4, R5, R6, and R7 may be the same or different and are a substituent such as a hydrogen atom. X represents a halogen atom. R8 represents a substituent that has a π bond and 3-20 carbon atoms. With regard to the electron-donating properties of R1-R7 with respect to the coordination center M of the ligand containing R1-R7 that is indicated in formula (2), R1-R7 are arranged in combination such that the TEP value obtained from infrared spectroscopy shifts toward the low frequency side compared to the TEP value of the ligand of formula (2-1).

公开(公告)号：US11167278B2

公开(公告)日：2021-11-09

申请号：US16466413

申请日：2017-12-06

Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY ,  N.E. CHEMCAT CORPORATION

Inventor： Junchul Choi ,  Norihisa Fukaya ,  Shunya Onozawa ,  Kazuhiko Sato ,  Hiroyuki Yasuda ,  Tomoteru Mizusaki ,  Yukio Takagi

IPC: B01J31/22

Abstract: An organometallic complex catalyst that makes it possible to obtain a higher yield of a desired product than conventional catalysts in a cross-coupling reaction. The organometallic complex catalyst has a structure represented by formula (1) and is for use in a cross-coupling reaction. In formula (1), M is the coordination center and represents a metal atom such as Pd or an ion thereof. R1, R2, and R3 may be the same or different and are a substituent such as a hydrogen atom. R4, R5, R6, and R7 may be the same or different and are a substituent such as a hydrogen atom. X represents a halogen atom. R8 represents a substituent that has a π bond and 3-20 carbon atoms. With regard to the electron-donating properties of R1-R7 with respect to the coordination center M of the ligand containing R1-R7 that is indicated in formula (2), R1-R7 are arranged in combination such that the TEP value obtained from infrared spectroscopy shifts toward the low frequency side compared to the TEP value of the ligand of formula (2-1).

公开(公告)号：US20210308660A1

公开(公告)日：2021-10-07

申请号：US17269093

申请日：2019-08-28

Applicant: N.E. CHEMCAT CORPORATION ,  NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

Inventor： Tomoteru Mizusaki ,  Yukio Takagi ,  Junchul Choi ,  Norihisa Fukaya ,  Kazuhiro Matsumoto

IPC: B01J31/22 ,  C07C209/10

Abstract: It is an object of the present invention to provide a catalyst for a cross-coupling reaction in which an organometallic complex is sufficiently immobilized on a carrier and an object product can be easily obtained. The catalyst for a cross-coupling reaction of the present invention has a carrier part composed of a synthetic resin and an organometallic complex part immobilized on the carrier part by chemical bonding, and has a structure represented by formula (P1), wherein in (P1) R1, R2 may be the same or different, and is a substituent such as a hydrogen atom. R3, R4, R5, R6, R8, R9 may be the same or different and are substituents, such as a hydrogen. X represents a halogen atom, and R7 represents a substituent having 3 to 20 carbon atoms with a π bond. RS1 represents the main chain of the synthetic resin precursors having —CH2OH group at their end.