公开(公告)号：US20220274915A1

公开(公告)日：2022-09-01

申请号：US17637905

申请日：2020-08-21

Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED

Inventor： Hirohisa NITTA ,  Yuta NAGASHIMA ,  Hiroki MARUYAMA

IPC: C07C263/10 ,  C07D257/04

Abstract: The present specification discloses a method for producing an isocyanate compound. The invention relates to a method for producing the compound represented by formula (2), wherein the compound represented by formula (1) or a salt thereof is mixed with phosgene(s) under a condition such that the pH of the aqueous layer is 1 or less, in the presence of a water-immiscible solvent and water.

公开(公告)号：US20170144961A1

公开(公告)日：2017-05-25

申请号：US15300010

申请日：2015-04-08

Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED

Inventor： Teruki TAKAHASHI ,  Kazuya UEKI ,  Yuta NAGASHIMA

IPC: C07C201/12 ,  C07C205/11 ,  C07C209/68

CPC classification number: C07C201/12 ,  C07C205/11 ,  C07C209/68 ,  C07C211/29

Abstract: A compound represented by formula (1): can be produced by: a step wherein a compound represented by formula (2): is reacted with a compound represented by formula (3): thereby obtaining a compound represented by formula (4): a step wherein a compound represented by formula (4) is reacted with hypohalogenous acid or a salt thereof, thereby obtaining a compound represented by formula (5): and a step wherein a compound represented by formula (5) is reduced.

公开(公告)号：US20160318846A1

公开(公告)日：2016-11-03

申请号：US15107872

申请日：2014-12-15

Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED

Inventor： Yuya YOSHIMOTO ,  Tatsuya TORIUMI ,  Yuta NAGASHIMA

IPC: C07C201/12 ,  C07C213/02 ,  C07C205/34

CPC classification number: C07C201/12 ,  C07C205/34 ,  C07C213/02 ,  C07C217/76

Abstract: A nitro compound represented by formula (1) which is a raw material for producing a compound represented by formula (7) can be produced by reacting at least one type selected from the group consisting of a compound represented by formula (2), a compound represented by formula (3), and a compound represented by formula (3′) with a compound represented by formula (4). [In the formula, R1, R2, R3, and R4 are each independently a hydrogen atom, etc., X1 and X2 are each independently a chlorine atom, etc., R6, R7, R8, and R9 are a hydrogen atom, etc., provided that X1, X2, R6, R7, R8, and R9 are not all the same, X3, X4, and X5 are a halogen atom, R10 is a nitro group, etc., R5 is an alkyl group having 1 to 12 carbon atoms, etc., and M is an alkali metal atom.]

公开(公告)号：US20180354894A1

公开(公告)日：2018-12-13

申请号：US16062275

申请日：2016-12-14

Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED

Inventor： Takashi MIYAMOTO ,  Yuta NAGASHIMA ,  Masaji HIROTA

IPC: C07C263/10 ,  C07C265/12

CPC classification number: C07C263/10 ,  C07C265/12

Abstract: The present invention provides a process for producing an isocyanate compound such as 3-methyl-2-methoxymethyl-1-isocyanate benzene and the like. By reacting 3-Methyl-2-methoxymethyl aniline and the like with phosgene in the presence of a tertiary amine at 10° C. to 14° C. in one or more solvents selected from the group consisting of toluene and xylene, isocyanate compounds such as 3-methyl-2-methoxymethyl-1-isocyanate benzene and the like can be produced at high yield.

公开(公告)号：US20170129846A1

公开(公告)日：2017-05-11

申请号：US15300018

申请日：2015-04-08

Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED

Inventor： Teruki TAKAHASHI ,  Kazuya UEKI ,  Yuta NAGASHIMA

IPC: C07C201/12 ,  C07C209/68

CPC classification number: C07C201/12 ,  C07C209/68 ,  C07C205/11

Abstract: A compound represented by formula (1): (wherein, R1a represents an alkyl group having 1 to 6 carbon atoms or the like, R1b and R1c represent a hydrogen atom or the like, and X represents a chlorine atom, a bromine atom or an iodine atom) can be produced by: a step wherein a compound represented by formula (2): is reacted with a compound represented by formula (3): (wherein, each of R2 and R3 independently represents an alkyl group having 1 to 3 carbon atoms or the like, and each of R6 and R7 independently represents an alkoxy group having 1 to 3 carbon atoms or the like), thereby obtaining a compound represented by formula (4): a step wherein a compound represented by formula (4) is oxidized; a step wherein the product in the oxidation step is reduced; and a step wherein the product in the reduction reaction is halogenated.