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    PRODUCTION OF AROMATIC ISOCYANATE
    63.
    发明专利
    PRODUCTION OF AROMATIC ISOCYANATE 失效

    公开(公告)号：JPS577456A

    公开(公告)日：1982-01-14

    申请号：JP8018080

    申请日：1980-06-16

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： TSUMURA RIYUUICHIROU ,  TAKAGI USAJI ,  KASUGA TAKAHARU ,  IKEDA KEIICHI

    IPC: B01J31/22 ,  B01J31/28

    Abstract: PURPOSE:The reaction between an aromatic nitro compound and carbon monoxide is conducted in the presence of a maine catalyst of a noble metal and a cocatalyst of a compound of a metal of VA group at high temperature under high pressure to produce the titled compound used as a raw material of polyurethane directly in high yield. CONSTITUTION:At least one selected from a mixture of a compound of noble metal such as Ru and a heteroaromatic nitrogen compound such a pyrrole, a complex of noble metal coordinated by the above nitrogen compound such as bis(pyridine) dichloropalladium (II) and a mixture of the complex and the nitrogen compound is used as a main catalyst and at least one of cyclopentadienyl halide of transition metal of group VA in the periodic table is used as a cocatalyst to effect the reaction between an aromatic nitro compound such as nitrobenzene and carbon monoxide at high temperature under high pressure, thus producing the titled compound. The addition of the cocatalyst permits the reduction in the main catalyst required to about 1/10 of the amount used in the conventional process and facilitates are recovery.

    PRODUCTION OF INDOLE OR INDOLE DERIVATIVE
    67.
    发明专利
    PRODUCTION OF INDOLE OR INDOLE DERIVATIVE 失效

    公开(公告)号：JPH0871420A

    公开(公告)日：1996-03-19

    申请号：JP21290294

    申请日：1994-09-06

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： KASUGA TAKAHARU ,  TAKAMURA KAZUO ,  HARA RETSU ,  TAKAGI USAJI

    IPC: C07D209/08 ,  B01J23/72 ,  C07B61/00

    Abstract: PURPOSE: To obtain a catalyst for industrially producing indole or its derivatives by using inexpensive starting materials and a single-stage liquid phase reaction by adding a base to a homogeneous aq. solution contg. a silicate, a copper compound, a magnesium compound and a mineral acid.to effect coprecipitation. CONSTITUTION: This catalyst for producing indole or its derivatives from one of anilines and one of 1,2-glycols is obtained by preparing a homogeneous aq. solution contg. a silicate a copper compound, a magnesium compound and a mineral acid and thereafter, adding a base to the solution to effect coprecipitation. For example, a copper compound.and a magnesium compound are added to a mineral acid--acidic solution of a water-soluble silicate to form a homogeneous aq. solution and then, a base is added to the resulting aq. solution to obtain coprecipitated solid hydroxide and thereafter, the solid hydroxide is dried and calcined. Preferably, the pH of the homogeneous aq. solution before adding the base is

    OXIDATION OF 2-CHLOROPROPIONIC ALDEHYDE
    70.
    发明专利
    OXIDATION OF 2-CHLOROPROPIONIC ALDEHYDE 失效

    公开(公告)号：JPS6416745A

    公开(公告)日：1989-01-20

    申请号：JP17286587

    申请日：1987-07-13

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： ONO HIROSHI ,  KASUGA TAKAHARU ,  KIYONO SHINJI

    IPC: B01J27/13 ,  B01J23/42 ,  B01J23/44 ,  B01J31/04 ,  C07C51/00 ,  C07C51/235 ,  C07C53/19 ,  C07C67/00

    Abstract: PURPOSE:To obtain the titled compound having uses of wide range such as an intermediate for synthesizing industrial chemicals and capable of readily controlling also oxidation rate without by-product in advantageous conditions, by oxidizing 2-chloropropionic aldehyde with oxygen, etc., in the presence of a specific metal compound catalyst in a liquid phase. CONSTITUTION:2-Chloropropionic aldehyde which is a raw material is oxidized in the presence of at least one kind of metal compound catalyst selected from a palladium compound or platinum compound as a catalyst in a liquid phase with oxygen or an oxygen-containing gas at 20-120 deg.C, preferably 40-80 deg.C to provide the aimed compound. The above-mentioned reaction is preferably carried out using a solvent such as acetic acid and in a concentration of raw material in the solvent in the range of normally 1-50wt.%, especially 5-15wt.%. Further more, as the above-mentioned catalyst, e.g. palladium black, palladium oxide, platinum black, platinum dioxide is preferably used in a liquid phase in the range of 0.01-5wt.%.

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