公开(公告)号：DE2514445A1

公开(公告)日：1975-10-23

申请号：DE2514445

申请日：1975-04-02

Applicant: MITSUI TOATSU CHEMICALS

Inventor： IWAMURA AKIO ,  MURAKAMI HISAMICHI ,  OKUBO ICHIRO ,  SAMESHIMA MUNEYASU ,  OSAWA TAGUI ,  HIRAI YUTAKA ,  OMUTA FUKUOKA

IPC: C07C20060101 ,  C09B1/16 ,  C09B1/20 ,  C09B1/22 ,  C07C97/24

公开(公告)号：IN143198B

公开(公告)日：1977-10-15

申请号：IN624CA1975

申请日：1975-03-29

Applicant: MITSUI TOATSU CHEMICALS

Inventor： OSAWA TAGUI ,  IWAMURA AKIO ,  HIRAI YUTAKA ,  OKUBO ICHIRO ,  MURAKAMI HISAMICHI ,  SAMESHIMA MUNEYASU

IPC: C07C20060101 ,  C09B1/16 ,  C09B1/20 ,  C09B1/22 ,  C07C49/68 ,  C07C85/10

公开(公告)号：DE2509819A1

公开(公告)日：1975-09-11

申请号：DE2509819

申请日：1975-03-06

Applicant: MITSUI TOATSU CHEMICALS

Inventor： IWAMURA AKIO ,  TAKAHASHI SADAO ,  MURAKAMI HISAMICHI ,  OKUBO ICHIRO

IPC: C07C79/37

Abstract: 5- and 6-Nitro-1,4-naphthoquinones (Ie are prepd. by nitrating, 1,4-naphthaquinone using HNO3 and H2SO4 and sepg. the crude product by crystallisation. (I) are inters for dyes and agricultural chemicals. The nitrated product may be purified by dissolving the crude product in an aliphatic halogenated hydrocarbon esp. trichloroethylene or tetrachloroethylene and crystallising the product there from to give 5-nitro-1,4-naphthoquinone and 6-nitro-1,4-naphthoquinone in the mother liquors. Other solvents also may be used.

公开(公告)号：JPS6256186B2

公开(公告)日：1987-11-24

申请号：JP4913979

申请日：1979-04-23

Applicant: MITSUI TOATSU CHEMICALS

Inventor： TORISU YASUYOSHI ,  IWAMURA AKIO ,  ABE KENJI ,  MOMIJI SEISHICHIRO ,  YOSHIZATO TOORU

IPC: C09B5/48

公开(公告)号：JPS6042785B2

公开(公告)日：1985-09-25

申请号：JP4841377

申请日：1977-04-28

Applicant: MITSUI TOATSU CHEMICALS

Inventor： KATO KIMITOSHI ,  IWAMURA AKIO ,  AIGA HIROSHI ,  HASEYAMA RYUJI ,  TANAKA TADAAKI

IPC: C09B1/22 ,  C07C225/34

公开(公告)号：JPS53135961A

公开(公告)日：1978-11-28

申请号：JP4841377

申请日：1977-04-28

Applicant: MITSUI TOATSU CHEMICALS

Inventor： KATOU KIMITOSHI ,  IWAMURA AKIO ,  AIGA HIROSHI ,  HASEYAMA RIYUUJI ,  TANAKA TADAAKI

IPC: C09B1/22 ,  C07C225/34

Abstract: PURPOSE:To prepare the title compound useful as an intermediate of anthraquinone dye, economically and in high purity, without using a large amount of sulfuric acid or fuming sulfuric acid, by the bromination of 1-aminoanthraquinone fine crystals in an aqueous medium.

公开(公告)号：JPS56123955A

公开(公告)日：1981-09-29

申请号：JP2734280

申请日：1980-03-06

Applicant: MITSUI TOATSU CHEMICALS

Inventor： IWAMURA AKIO ,  TANAKA TADAAKI

IPC: C07C225/36

Abstract: PURPOSE:To obtain the titled compound useful as an intermediate for a dye in high purity in a short time, by brominating 1-aminoanthraquinone in sulfuric acid in the presence of boric acid, adjusting the amount of the sulfuric acid if necessary, and then hydrolyzing the reaction product. CONSTITUTION:One mole 1-aminoanthraquinone is reacted with bromine in the presence of 0.5-5mol boric acid in sulfuric acid to give 1-amino-2,4-dibromoanthraquinone. The reaction is carried out in the sulfuric acid or fuming sulfuric acid in an amount of 2-10 times that of the 1-aminoanthraquinone at 60-70 deg.C. The amount and/or the concentration of the sulfuric acid are adjusted if necessary, and the reaction mixture is heated while recovering the excess bromine by distillation, and then hydrolyzed at 100-140 deg.C to give the titled compound. The addition of the boric acid to be used for the hydrolysis from the initial period of the reaction permits the reduction of the bromination reaction time and the inhibition of the formation of impurities as a by-product.

公开(公告)号：JPS55142053A

公开(公告)日：1980-11-06

申请号：JP4913979

申请日：1979-04-23

Applicant: MITSUI TOATSU CHEMICALS

Inventor： TORISU YASUYOSHI ,  IWAMURA AKIO ,  ABE KENJI ,  MOMIJI SEISHICHIROU ,  YOSHIZATO TOORU

IPC: C09B5/48

Abstract: PURPOSE:To milden the initial reaction, and to obtain the title compound with suppressed by-products, by feeding aminoanthraquinone with an alkaline condensation agent in portions to a reaction system comprising dimethyl sulfoxide and an oxidizing agent. CONSTITUTION:One or more materials of 1-aminoanthraquinone (A) and an alkaline condensation agent (C) are fed to a reaction system comprising dimethyl sulfoxide (DMSO) and an oxidizing agent (B) in portions, and/or the amount of water present in the system is adjusted to give the objective compound. For example, DMSO, A, and 0-50% alkaline condensing agent, e.g. KOH of the total amt. of (C), are fed to a reactor, and the remaining C is slowly added to drive the reaction in the presence of (B), e.g. air, at 80-140 deg.C. Water is distilled off, if necessary, to complete the reaction.

公开(公告)号：JPS52111522A

公开(公告)日：1977-09-19

申请号：JP2706476

申请日：1976-03-15

Applicant: MITSUI TOATSU CHEMICALS

Inventor： YOSHIURA KOUICHI ,  KAWAKAMI MICHIO ,  IWAMURA AKIO ,  SAKAI TSUNEHIRO

IPC: C07C205/12 ,  C07C67/00 ,  C07C201/00 ,  C07C205/47

Abstract: PURPOSE:Dinitroanthraquinone and chlorodinitrobenzene are simultaneously prepared by the nitration of anthraquinone and chloronitrobenzene with a small amount of a nitrating agent without causing danger and environmetal pollution.

公开(公告)号：JPS5129472A

公开(公告)日：1976-03-12

申请号：JP10191274

申请日：1974-09-06

Applicant: MITSUI TOATSU CHEMICALS

Inventor： YANO NAOYUKI ,  TORISU MITSUYOSHI ,  TAKAHASHI SADAO ,  IWAMURA AKIO ,  YAGI NOBORU ,  OOKUBO ICHIRO ,  MURAKAMI NAOMICHI

IPC: C07C239/14 ,  C07C67/00 ,  C07C239/00