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    METHOD FOR PRODUCING AROMATIC CARBAMIC ACID ESTER
    1.
    发明专利
    METHOD FOR PRODUCING AROMATIC CARBAMIC ACID ESTER 审中-公开

    公开(公告)号：JP2003183240A

    公开(公告)日：2003-07-03

    申请号：JP2001388366

    申请日：2001-12-20

    Applicant: NIPPON POLYURETHANE KOGYO KK ,  SAGAMI CHEM RES

    Inventor： YAMADA SUSUMU ,  MORIYA KIYOSHI ,  FUCHIGAMI TAKAMASA ,  WAKASA NORIKO

    IPC: C07C269/00 ,  C07B61/00 ,  C07C271/28

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing an aromatic carbamic acid ester, capable of safely and effectively producing the ester with high purity, without using any strong acid nor strong base. SOLUTION: This method for producing the aromatic carbamic acid ester comprises reacting an aromatic nitro compound or a derivative of the aromatic nitro compound with a lower aliphatic alcohol and carbon monoxide in the presence of a catalyst, wherein the reaction is carried out in the presence of at least one of reaction. accelerator selected from a group comprising a hexafluorophosphoric acid salt, a tetrafluoroboric acid salt, and a perchloric acid salt. A palladium catalyst is preferably used as the catalyst. COPYRIGHT: (C)2003,JPO

    METHOD FOR PRODUCING DISILYL ACETAL AND ALDEHYDE
    2.
    发明专利
    METHOD FOR PRODUCING DISILYL ACETAL AND ALDEHYDE 审中-公开

    公开(公告)号：JP2003155258A

    公开(公告)日：2003-05-27

    申请号：JP2002012968

    申请日：2002-01-22

    Applicant: SAGAMI CHEM RES

    Inventor： FUCHIGAMI TAKAMASA ,  HAGIWARA EMIKO

    IPC: C07C45/00 ,  C07B61/00 ,  C07C47/02 ,  C07C47/277 ,  C07C47/32 ,  C07C47/542 ,  C07F7/18

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing disilyl acetals and aldehydes useful as an intermediate for an organic synthesis. SOLUTION: This method for producing the disilyl acetals expressed by the general formula RCH(OSiR R R )2 or RCH(OSiR R R )(OSiR R R ) is provided by performing a reaction of a carboxylic acid expressed by the general formula: RCOOH or a carboxylic acid silyl ester expressed by the general formula: RCOOSiR R R with a hydrosilane expressed by the general formula: HSiR R R in the presence of a ruthenium catalyst. The method for producing the aldehydes expressed by the general formula: RCHO is characterized by performing a reaction of the disilyl acetals in the presence of a transition metal catalyst.

    PRODUCTION OF N-SILYLIMINES
    3.
    发明专利
    PRODUCTION OF N-SILYLIMINES 失效

    公开(公告)号：JPH11228579A

    公开(公告)日：1999-08-24

    申请号：JP2790898

    申请日：1998-02-10

    Applicant: SAGAMI CHEM RES

    Inventor： FUCHIGAMI TAKAMASA ,  IGARASHI ISAO

    IPC: B01J31/12 ,  B01J31/24 ,  C07B61/00 ,  C07F7/10 ,  C07F7/12 ,  C07F7/18

    Abstract: PROBLEM TO BE SOLVED: To provide a simple and highly general-purpose method for producing N-silylimines useful as a synthetic intermediate for medicines. SOLUTION: Nitriles represented by the general formula; R-C≡N (R denotes an alkyl group, an aromatic group or an alkoxy group) are reacted with hydrosilanes represented by the general formula; H-SiR R R (R , R and R denote each independently an alkyl group, an aromatic group or an alkoxy group) in the presence of a group 8 or a group 9 transition metal catalyst to produce N-silylimines represented by the general formula; RHC=N-SiR R R .

    PRODUCTION OF DIOL
    4.
    发明专利
    PRODUCTION OF DIOL 失效

    公开(公告)号：JPH09132541A

    公开(公告)日：1997-05-20

    申请号：JP20186196

    申请日：1996-07-31

    Applicant: SAGAMI CHEM RES ,  ARAKAWA CHEM IND

    Inventor： FUCHIGAMI TAKAMASA ,  GA TOKUKA ,  WAKASA NORIKO ,  TAWARA KATSUHIKO

    IPC: B01J23/652 ,  B01J23/656 ,  C07B61/00 ,  C07C29/149 ,  C07C31/20 ,  C07C33/035 ,  C07C37/56 ,  C07C39/08

    Abstract: PROBLEM TO BE SOLVED: To obtain a diol useful as a raw material for synthetic resins and medicines in good yield by subjecting a dicarboxylic acid to hydrogenerating reduction in the presence of a catalyst. SOLUTION: A dicarboxylic acid of the formula, HOOC-R-COOH (R is a substitutable saturated, unsaturated or aromatic divalent 3-20C hydrocarbon) is subjected to hydrogenerating reduction in the presence of a catalyst at 100-200 deg.C under 20-120kg/cm pressure to provide the objective diol of the formula, HOCH2 -R'-CH2 OH (R is as same as R when R is a saturated hydrocarbon and R' is a saturated hydrocarbon having same skeleton as R when R is an unsaturated or aromatic hydrocarbon). A catalyst comprising a metal selected from Ru and Rh and/or its metal compound and a metal selected from VI b group and Re and/or its metal compound is used for the above purpose. The catalyst may be supported on a support.

    UREA DERIVATIVE
    5.
    发明专利
    UREA DERIVATIVE 失效

    公开(公告)号：JPH08193059A

    公开(公告)日：1996-07-30

    申请号：JP21793295

    申请日：1995-08-25

    Applicant: SAGAMI CHEM RES

    Inventor： HIRAI KENJI ,  FUCHIGAMI TAKAMASA ,  FUJITA ATSUKO ,  HIROSE HIROAKI ,  YOKOTA MASAHIRO ,  NAGATO SHOIN

    IPC: C07D233/96 ,  A01N43/50 ,  C07C275/32

    Abstract: PURPOSE: To obtain a urea derivative which is represented by a specific formula and useful as a synthetic intermediate for a hydantoin derivative. CONSTITUTION: This derivative is represented by formula I (X, Y are each a halogen; R is a lower alkyl, aralkyl), typically 2-fluoro-4-chloro-5- methoxycarbonyloxyphenylurea. This urea is obtained by catalytically reducing a nitrobenzene derivative of formula II (R is the same as R) in the presence of a platinum oxide catalyst into an aniline derivative, treating the product with a phosgene gas or trichloromethyl chloroformate to obtain an isocyanate derivative of formula III, followed by treatment of the isocyanate with ammonia to obtain this urea.

    PRODUCTION OF FLUORINE-CONTAINING COMPOUND
    6.
    发明专利
    PRODUCTION OF FLUORINE-CONTAINING COMPOUND 失效

    公开(公告)号：JPH0789885A

    公开(公告)日：1995-04-04

    申请号：JP25471793

    申请日：1993-09-17

    Applicant: SAGAMI CHEM RES

    Inventor： FUCHIGAMI TAKAMASA ,  SATO RIE

    IPC: B01J31/24 ,  C07B61/00 ,  C07C17/263 ,  C07C21/18 ,  C07C22/08

    Abstract: PURPOSE:To provide a simple process for the production of a fluorine-containing compound useful as an important raw material for pharmaceuticals, agrochemicals, functional materials, etc. CONSTITUTION:This process for the production of a fluorine-containing compound expressed by the general formula Y-CF2-CR2-CR2-R' or R'-CR2-CR2-(CF2)n- CR2-CR2-R' comprises the reaction of an organotin compound expressed by the general formula R'SnR''3 with a halogenated compound expressed by the general formula Y-CF2-CR2-CR2-X or X-CR2-CR2-(CF2)n-CR2-CR2-X (R' IS alkenyl, alkynyl, aralkyl or aromatic group; R'' is alkyl; Y is H, halogen or polyfluoroalkyl; X is halogen; R is H, alkyl, alkenyl, alkynyl or aromatic group; (n) is integer of 1-20).

    POLYMERIZATION CATALYST FOR ACETYLENES
    7.
    发明专利
    POLYMERIZATION CATALYST FOR ACETYLENES 失效

    公开(公告)号：JPH0748419A

    公开(公告)日：1995-02-21

    申请号：JP7690894

    申请日：1994-04-15

    Applicant: SAGAMI CHEM RES

    Inventor： FUCHIGAMI TAKAMASA ,  YAMAMOTO TOSHINORI

    IPC: C08F4/22 ,  C08F4/06 ,  C08F38/00

    Abstract: PURPOSE:To obtain a catalyst for the polymerization of acetylenes, composed of a specific tungsten complex, having a high activity and excellent stability and useful for the production of oxygen-enriching membrane, electrically conductive material, etc. CONSTITUTION:This acetylene-polymerization catalyst is composed of a tungsten complex expressed by the formula (A is alkali metal cation, ammonium cation, iminium cation or phosphonium cation), e.g. the compound of the formula Et4 N [HW2(CO)10] .

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