公开(公告)号：EP3778559A1

公开(公告)日：2021-02-17

申请号：EP19785144.7

申请日：2019-04-11

申请人： MITSUBISHI GAS CHEMICAL COMPANY, INC.

发明人： SHIOMI, Noriyuki ,  NAKANO, Emi ,  IIDA, Akifumi

IPC分类号： C07C253/22 ,  C07C209/48 ,  C07C211/18 ,  C07C255/46 ,  C07B61/00

摘要： The present invention provides a novel method for preparing a dicyanoalkane, wherein a filtration step for a catalyst after a cyanation reaction step can be omitted by carrying out the cyanation reaction in a state in which precipitation of a metal catalyst is suppressed. According to one aspect of the present invention, there is provided a method for preparing a dicyanoalkane, the method including a cyanation reaction step in which at least one selected from the group consisting of an aliphatic dicarboxylic acid and a salt thereof is cyanated with an ammonia source in the presence of a predetermined compound and a catalyst, wherein, in the cyanation reaction step, the amount of the predetermined compound is maintained at a predetermined amount or more with respect to the catalyst.

公开(公告)号：EP3604286A1

公开(公告)日：2020-02-05

申请号：EP18776116.8

申请日：2018-03-23

申请人： Mitsubishi Gas Chemical Company, Inc.

发明人： KANBARA, Yutaka ,  NAKANO, Emi

IPC分类号： C07D233/24 ,  C07D239/06 ,  C08G59/50

摘要： In order to provide a novel phenyl imidazoline compound having an aminomethyl group, a novel phenyl tetrahydropyrimidine compound having an aminomethyl group, or the like, a compound according to the present invention or a salt thereof is represented by the following formula (1):

wherein R 1 and R 2 each independently represent hydrogen or a substituent selected from the group consisting of an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, an aryloxy group having 6 to 10 carbon atoms, a hydroxyl group, an amide group, and a halogen atom; and n is an integer of 1 or 2.

公开(公告)号：EP3733643A1

公开(公告)日：2020-11-04

申请号：EP18897442.2

申请日：2018-12-26

申请人： Mitsubishi Gas Chemical Company, Inc.

发明人： NAKANO, Emi ,  SHIOMI, Noriyuki ,  IIDA, Akifumi

IPC分类号： C07C253/22 ,  C07C255/45 ,  C07B61/00

摘要： The problem addressed by this invention is to achieve a useful and novel method for producing dicyanocyclohexane and bis(aminomethyl)cyclohexane. This problem was solved by providing a method for producing dicyanocyclohexane having a cyanation step in which dicyanocyclohexane is obtained by a cyanation reaction of cyanocyclohexane-1-carboxylic acid and/or a salt thereof with an ammonia source, and a method for producing bis(aminomethyl)cyclohexane using the dicyanocyclohexane thus produced.

公开(公告)号：EP3524590A1

公开(公告)日：2019-08-14

申请号：EP17858285.4

申请日：2017-09-28

申请人： Mitsubishi Gas Chemical Company, Inc.

发明人： IIDA, Akifumi ,  OHMORI, Yuta ,  NAKANO, Emi ,  YAMAZOE, Aoi

IPC分类号： C07C253/22 ,  C07C51/36 ,  C07C61/09 ,  C07C209/48 ,  C07C211/18 ,  C07C255/46 ,  C07B61/00

摘要： A method for producing 1,4-dicyanocyclohexane, having a step of obtaining 1,4-dicyanocyclohexane by subjecting a heated concentrate of an aqueous ammonia solution of 1,4-cyclohexanedicarboxylic acid to a cyanation reaction.

公开(公告)号：EP3670497A1

公开(公告)日：2020-06-24

申请号：EP18846376.4

申请日：2018-08-06

申请人： Mitsubishi Gas Chemical Company, Inc.

发明人： IIDA, Akifumi ,  NAKANO, Emi ,  KANBARA, Yutaka

IPC分类号： C07C253/22 ,  C07C209/48 ,  C07C255/46 ,  C07B61/00

摘要： The present invention provides a production method for dicyanocyclohexane, including a step of obtaining dicyanocyclohexane by reacting cyclohexanedicarboxylic acid and/or a salt thereof, or a heated concentrate of an aqueous ammonia solution of cyclohexanedicarboxylic acid with ammonia in a solvent having a boiling point equal to or higher than a reaction temperature.