中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

58 records (took 0.026 seconds)

    3.
    发明专利
    未知

    公开(公告)号：DE69107579T2

    公开(公告)日：1995-06-14

    申请号：DE69107579

    申请日：1991-11-15

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： YASUMOTO MASAHIKO ,  TSUCHIYA TOURU ,  SHIBUYA ISAO ,  YONEMOTO KATSUMI ,  TAGUCHI YOICHI C O NATIONAL CH

    IPC: C07D285/34

    Abstract: There is disclosed a method for producing 2,6-bis(disubstituted amino)-4-1,3,5-thiadiazine-4-one compounds represented by formula (I). The method comprises reacting an N,N-disubstituted cyanamide represented by formula (II) with carbonyl sulfide represented by formula (III) under a high pressure. wherein R1 and R2 each represent an alkyl group or R1 and R2 may bond together to form a ring, wherein R1 and R2 each have the same meanings as in formula (I), Formula (III> S = C = O . o

    4.
    发明专利
    未知

    公开(公告)号：DE69107579D1

    公开(公告)日：1995-03-30

    申请号：DE69107579

    申请日：1991-11-15

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： YASUMOTO MASAHIKO ,  TSUCHIYA TOURU ,  SHIBUYA ISAO ,  YONEMOTO KATSUMI ,  TAGUCHI YOICHI C O NATIONAL CH

    IPC: C07D285/34

    Abstract: There is disclosed a method for producing 2,6-bis(disubstituted amino)-4-1,3,5-thiadiazine-4-one compounds represented by formula (I). The method comprises reacting an N,N-disubstituted cyanamide represented by formula (II) with carbonyl sulfide represented by formula (III) under a high pressure. wherein R1 and R2 each represent an alkyl group or R1 and R2 may bond together to form a ring, wherein R1 and R2 each have the same meanings as in formula (I), Formula (III> S = C = O . o

    NOVEL N-GLYCOSIDE AND ITS PRODUCTION
    5.
    发明专利
    NOVEL N-GLYCOSIDE AND ITS PRODUCTION 失效

    公开(公告)号：JP2000072792A

    公开(公告)日：2000-03-07

    申请号：JP24390898

    申请日：1998-08-28

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： GAMA YASUO ,  SHIBUYA ISAO ,  SHIMIZU MASAO

    IPC: C07H19/12

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject novel N-glycoside that is useful as a physiologically active compound or its intermediate compound from a readily available raw material. SOLUTION: This novel compound is an N-glycoside represented by formula I (Z is 2,3,4,6-tetra-O-acetyl-β-D-gluco-pyranosyl; R1 and R2 are each an alkyl, an aryl, an aralkyl or the like), typically 1-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-6- diethylamino-1,3,5-triazine-2,4-dione. The compound of formula I is readily prepared in high yield, for example, by allowing silver cyanate to react with an N-glycosyl-N',N'-disubstituted thiourea represented by formula II (Z1 is 2,3,4,6- tetra-O-acetyl-β-D-glucopyranosyl). The compound of formula I is useful as an intermediate for fine chemical products as medicines, agrochemicals and the like or as a physiologically active substance.

    ANTI-FOGGANT FOR SILVER HALIDE PHOTOGRAPHY
    6.
    发明专利
    ANTI-FOGGANT FOR SILVER HALIDE PHOTOGRAPHY 失效

    公开(公告)号：JPH0527359A

    公开(公告)日：1993-02-05

    申请号：JP4410991

    申请日：1991-02-18

    Applicant: AGENCY IND SCIENCE TECHN ,  KONISHIROKU PHOTO IND

    Inventor： YONEMOTO KATSUMI ,  SHIBUYA ISAO ,  HIRABAYASHI SHIGETO ,  KANEKO YUTAKA

    IPC: G03C1/34

    Abstract: PURPOSE:To prevent fogging and to suppress fogging at the time of rapid processing at high temp. by using a specified compd. as an anti-foggant. CONSTITUTION:A compd. represented by formula I is used as an anti-foggant for silver halide photography. In the formula I, each of R1 and R2 is alkyl, R1 and R2 may be different from each other and R3 is alkoxy or dialkylamino. At least one kind of anti-foggant made of the compd. represented by the formula I is incorporated into a silver halide emulsion layer or an adjacent hydrophilic colloidal layer. This anti-foggant inhibits fogging during storage even at high temp. or high temp. and humidity and does not cause the lowering of sensitivity and the softening of gradation.

    PREPARATION OF 1,3,5-PERHYDROTRIAZINE-2,4,6-TRITHIONE DERIVATIVE
    8.
    发明专利
    PREPARATION OF 1,3,5-PERHYDROTRIAZINE-2,4,6-TRITHIONE DERIVATIVE 失效

    公开(公告)号：JPH03258768A

    公开(公告)日：1991-11-19

    申请号：JP5577990

    申请日：1990-03-07

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： TAGUCHI YOICHI ,  SHIBUYA ISAO

    IPC: C07D251/38 ,  A01N43/64

    Abstract: PURPOSE:To simply prepare a 1,3,5-perhydrotriazine-2,4,6-trithione derivative in a high yield by reacting an isothiocyanic acid ester in the presence of a base under a high pressure. CONSTITUTION:An isothiocyanic acid ester of formula RNCS (R is alkyl, aryl) is reacted with in the presence of a base such as triethylamine in a solvent such as benzene at room temperature to 100 deg.C under a high pressure of 500-9000kg/cm to provide the objective compound. 1,3,5-Trimethyl-1,3,5- perhydrotrithione is active to diseases of rice and an oxygen homologue thereof, an isocyanuric acid derivative, is useful as a modifying agent for resins, etc.

    PRODUCTION OF TRIARYLMETHANE COMPOUND
    9.
    发明专利
    PRODUCTION OF TRIARYLMETHANE COMPOUND 失效

    公开(公告)号：JPS63221171A

    公开(公告)日：1988-09-14

    申请号：JP5479087

    申请日：1987-03-10

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： YASUMOTO MASAHIKO ,  YANAGIYA KOSHIN ,  SHIBUYA ISAO ,  SEKIGUCHI TATSUO

    IPC: C09B11/00 ,  C07C1/32 ,  C07C15/16 ,  C09B11/14

    Abstract: PURPOSE:To obtain the title compd. which is a colorless crystal and has a high purity in a high yield without causing environmental pollution, by subjecting an arom. aldehyde and an arom. diamine to a dehydration-condensation reaction in the presence of optionally, a small amount of a reaction accelerator under high pressure. CONSTITUTION:An arom. aldehyde (A) such as benzaldehyde or a dialkylamino-, alkoxy-, alkyl-, NO2 or halogen-substd. benzaldehyde and an arom. amine (B) such as N,N-dialkylaniline, N-alkylaniline, aniline or a substitution compd. thereof are subjected to a dehydration-condensation reaction in the presence of a optionally, 0.1-50mol.% (based on the amount of the component A) of a reaction accelerator such as protonic acid, Lewis acid, etc. under a high pressure of 1,000-9,000kg/cm .

Patent Agency Ranking