1.
    发明专利
    未知

    公开(公告)号:DE69716962T2

    公开(公告)日:2003-07-03

    申请号:DE69716962

    申请日:1997-08-19

    Applicant: UBE INDUSTRIES

    Abstract: The present invention is to provide a trifluoro-substituted benzoic acid, an ester thereof, particularly 2,3,4-trifluoro-5-iodobenzoic acid, 2,3,4-trifluoro-5-trifluoromethylbenzoic acid, esters thereof, which are useful as a starting material for synthesizing a quinolonecarboxylic acid compound useful as a medicine, an anti-bacterial agent or an antiviral agent, and processes for preparing these compounds and 2,4,5-trifluoro-3-iodobenzoic acid, 2,4,5-trifluoro-3-trifluoromethylbenzoic acid and esters thereof.

    2.
    发明专利
    未知

    公开(公告)号:DE69716962D1

    公开(公告)日:2002-12-12

    申请号:DE69716962

    申请日:1997-08-19

    Applicant: UBE INDUSTRIES

    Abstract: The present invention is to provide a trifluoro-substituted benzoic acid, an ester thereof, particularly 2,3,4-trifluoro-5-iodobenzoic acid, 2,3,4-trifluoro-5-trifluoromethylbenzoic acid, esters thereof, which are useful as a starting material for synthesizing a quinolonecarboxylic acid compound useful as a medicine, an anti-bacterial agent or an antiviral agent, and processes for preparing these compounds and 2,4,5-trifluoro-3-iodobenzoic acid, 2,4,5-trifluoro-3-trifluoromethylbenzoic acid and esters thereof.

    4,5-DIHALOANILINE DERIVATIVE AND ITS PRODUCTION

    公开(公告)号:JPH08283217A

    公开(公告)日:1996-10-29

    申请号:JP8903695

    申请日:1995-04-14

    Applicant: UBE INDUSTRIES

    Abstract: PURPOSE: To obtain 3-fluoro-4-chloro-6-aminobenzaldehyde (acetal) as a new compound capable of giving quinolines having antiallergic activity in high yield, thus useful as an intermediate for antiallergic agents. CONSTITUTION: This new compound is 3-fluoro-4-chloro-6-aminobenzaldehyde of formula I or a compound of formula II (R and R are each a 1-4C alkyl and may be bound to each other) (e.g. 3-fluoro-4-chloro-6-aminobenzaldehyde ethyleneacetal). The compound of formula I or formula II is obtained by catalyst hydrogen reduction of a compound of formula III [X is F; X is Cl; Y is formyl or an acetal group of the formula CH(OR )(OR )] in the presence of a platinum- or ruthenium-contg. catalyst in an organic solvent under pressure.

    3-FLUORO-4-CHLORO-6-NITROBENZALDEHYDE, 3-FLUORO-4-CHLORO-6-NITROBENZALDEHYDE ACETAL AND THEIR PRODUCTION

    公开(公告)号:JPH08268974A

    公开(公告)日:1996-10-15

    申请号:JP6959095

    申请日:1995-03-28

    Applicant: UBE INDUSTRIES

    Abstract: PURPOSE: To obtain 3-fluoro-4-chloro-6-nitrobenzaldehyde and its acetal which can give a quinoline in high yield and is useful as a synthetic intermediate for an antiallergic. CONSTITUTION: 3-Fluoro-4-chloro-6-nitrobenzaldehyde of formula I. The compound of formula I is obtained by nitrating 3-fluoro-4-chloro-benzaldehyde with the mixed acid. 3-Fluoro-4-chloro-6-nitrobenzaldehyde acetal of formula II is prepared by reaction of 3,4-dichlor-6-nitrobenzaldehyde acetal with an alkali metal fluoride in a polar solvent or by reaction of the compound of formula I with an aliphatic alcohol or an ortho-acid trialkyl ester in the presence of an acid catalyst.

    Method for producing diaryl disulfide compound
    8.
    发明专利
    Method for producing diaryl disulfide compound 有权
    生产二异氰酸酯化合物的方法

    公开(公告)号:JP2011153094A

    公开(公告)日:2011-08-11

    申请号:JP2010015155

    申请日:2010-01-27

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a diaryl disulfide compound in high yield without requiring complicated operation by using an easily available reaction reagent.
    SOLUTION: The method for producing the diaryl disulfide compound represented by the formula: Ar-S-S-Ar (wherein, Ar is aryl or heteroaryl which may have a substituent) includes reacting an arylsulfonyl compound represented by the formula: Ar-SO
    2 -L (wherein, Ar has the same meanings as the above; and L is a leaving group), a reducing agent of a bromide represented by the formula: M-Br (wherein, M is a metal ion, a quaternary ammonium ion or a phosphonium ion) or a bromonium ion, and sulfuric acid in the presence of an organic acid.
    COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 待解决的问题:提供一种以高产率制备二芳基二硫化物化合物的方法,而不需要使用容易获得的反应试剂的复杂操作。 解决方案:由式Ar-SS-Ar(其中Ar是可以具有取代基的芳基或杂芳基)表示的二芳基二硫化物的制备方法包括使下式表示的芳基磺酰基化合物:Ar-SO (其中,Ar具有与上述相同的含义; L为离去基团),由式M-Br表示的溴化还原剂(其中,M为 金属离子,季铵离子或鏻离子)或溴鎓离子,和硫酸在有机酸存在下进行。 版权所有(C)2011,JPO&INPIT

    PRODUCTION OF 2,4,5-TRIFLUORO-3-IODOBENZOIC ACID AND ITS ESTER

    公开(公告)号:JPH1067706A

    公开(公告)日:1998-03-10

    申请号:JP22284696

    申请日:1996-08-23

    Applicant: UBE INDUSTRIES

    Abstract: PROBLEM TO BE SOLVED: To produce a 2,4,5-trifluoro-3-iodobenzoic acid and its ester which are useful as a material for 2,4,5-trifluoro-3-trifluoromethyl benzoic acids used as a starting material for production of antimicrobial and antiviral agents, easily and at a high yield. SOLUTION: This 2,4,5-trifluoro-3-iodobenzoic acid of formula I (R is an alkyl, cycloalkyl or aralkyl) is produced by making a 2,4,5-trifluoroiodobenzoic acid of formula II with a N-iodosuccinimide of formula III in the presence of trifluoromethane sulfonic acid. Furthermore, a 2,4,5-trifluoro-3-iodobenzoic ester of formula IV is obtained by reaction of a reactant mixture that contains a compound of formula I with an alcohol of the formula of R-OH.

    PRODUCTION OF 2,4,5-TRIFLUORO-3-IODOBENZOIC ACID

    公开(公告)号:JPH1059896A

    公开(公告)日:1998-03-03

    申请号:JP21704696

    申请日:1996-08-19

    Applicant: UBE INDUSTRIES

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing 2,4,5-trifluoro-3-iodobenzoic acid useful as a raw material for the production of 2,4,5-trifluoro-3- trifluoromethylbenzoic acid which is an important intermediate for synthesizing quinolone carboxylic acid compounds useful as medicines, antibacterial agents and antiviral agents. SOLUTION: A method for producing 2,3,4-trifluoro-3-iodobenzoic acid comprises reacting 3-amino-2,4,5-trifluorobenzoic acid with hydroiodic acid in the presence of sodium nitrite and a cuprous halide in a solvent.

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