公开(公告)号：DE2412975A1

公开(公告)日：1975-10-23

申请号：DE2412975

申请日：1974-03-18

Applicant: BASF AG

Inventor： NIESS ROLF DIPL CHEM DR

IPC: C07D275/04 ,  C09B29/00 ,  C09B29/045 ,  C09B29/08 ,  C07D275/06

Abstract: Process for the manufacture of 3-amino-2,1-benzisothiazoles by oxidative ring closure of o-aminothiobenzamides, comprising the improvement of conducting the reaction in about 85 to 110% sulfuric acid which serves as solvent and oxidizing agent. 3-Amino-2,1-benzisothiazoles are important diazo components for blue azo dyes.

公开(公告)号：DE2429195A1

公开(公告)日：1976-02-05

申请号：DE2429195

申请日：1974-06-18

Applicant: BASF AG

Inventor： EILINGSFELD HEINZ DIPL CHEM DR ,  NIESS ROLF DIPL CHEM DR

IPC: C07D513/04

Abstract: New 2-amino-pyrazolo-(3,4-d)thiazoles of formula (I): (where R1 is H, opt, substd. alkyl cycloalkyl, aralkyl, aryl, acyl or sulphonyl, R2 is opt. substd. alkyl, cycloalkyl, aralkyl, aryl or heteroaryl and R3 is H, 1-4C alkyl or opt. substd. Ph) are useful as starting matls. in prepn. of dyes where they serve as disazo components. (I) is prepd. by dehydrogenating cyclisation of cpds. having formula (II): in soln. or suspension at 5-150 (0-80) degrees C.

公开(公告)号：DE3109951A1

公开(公告)日：1982-09-23

申请号：DE3109951

申请日：1981-03-14

Applicant: BASF AG

Inventor： NIESS ROLF DIPL CHEM DR ,  SCHAEFFER KARL

IPC: C07D209/58 ,  C09B5/24 ,  C09B5/62 ,  C09B1/22 ,  D06P1/20

Abstract: An improvement in the process for the preparation of dispersed dyes of compounds of the formula (I) where X is >O or >NH and R is C1-C12-alkyl, C2-C6-hydroxyalkyl, alkoxyalkyl of 3 to 12 carbon atoms in total, C5-C8-cycloalkyl, phenoxy-C2- or-C3-alkyl, phenyl-C1-C4-alkyl or phenyl-C1-C4-alkoxy-C2- or -C3-alkyl, by reacting a compound I where R is H with an amine of the formula R-NH2 in a liquid under the influence of heat, wherein the reaction is carried out in water, in the presence or absence of a cationic or non-ionic surfactant. Very pure dyes are obtained with a high space/time yield.

公开(公告)号：DE2502589A1

公开(公告)日：1976-08-05

申请号：DE2502589

申请日：1975-01-23

Applicant: BASF AG

Inventor： HAGEN HELMUT DIPL ING DR ,  NIESS ROLF DIPL CHEM DR

IPC: C07D495/04 ,  C07D217/04

Abstract: Thienopyridines of formula (I): (R1,R2 and R3 are same or different H, or aliphatic or aromatic residues; R4 = heterocyclic aromatic group; R2 can also be halo, nitro, cyano, R5CO2, R5CONH or (R5CO)2N-R5 = H; (cyclo)aliphatic, araliphatic or aromatic group and R3 can also be OH) are prepared by base cyclisation of 2-(R4CH2S)-3-cyanopyridines. (I) are inters for dyes (esp. azo dyes) and pharmaceuticals.

公开(公告)号：DE2933531A1

公开(公告)日：1981-03-26

申请号：DE2933531

申请日：1979-08-18

Applicant: BASF AG

Inventor： NIESS ROLF DIPL CHEM DR ,  EPPLE GERHARD DIPL ING DR

IPC: C07C227/02 ,  C07C229/74 ,  C07C101/80

Abstract: Prepn. of 4-X-1-aminoanthraquinone-2-carboxylic acids (I) (where X is H or halogen) is carried out by treating the corresp. 4-X-2-acetyl 1-aminoanthraquinone (II) with hypochlorite at 60-100 deg.C in an aq. medium in the presence of at least 3 (pref. 3-5) moles of alkali metal hydroxide per mole of (II). (I) are intermediates for dispersion dyes, vat dyes and pigments. The process is simple, economic, and gives high yields of high-purity (I).

公开(公告)号：DE2507187A1

公开(公告)日：1976-09-02

申请号：DE2507187

申请日：1975-02-20

Applicant: BASF AG

Inventor： HAGEN HELMUT DIPL ING DR ,  HANSEN GUENTHER DIPL CHEM DR ,  NIESS ROLF DIPL CHEM DR

IPC: C09B29/08 ,  C09B39/00

Abstract: Monoazo dyes of formula: (in which R1 is H, alkyl, opt. substd. phenyl of alkoxycarbonyl; R2 is H, alkyl, Cl, Br, NO2, CN, acyloxy or acylamino; R3 is H, alkyl, opt. substd. phenyl of OH; R4 is alkanoyl, aroyl, alkoxycarbonyl, CN, NO2, nitrophenyl or a hetero-aromatic gp.; R5 is H, Cl, CH3, acetylamino, or propionylamino; R6 is H, CH3, methoxy or ethoxy; R7 is 1-4C alkyl, 2-3C hydroxyalkyl, 3-7C alkoxyalkyl, 4-7C alkanoylalkyl, cyanethyl, 1-4C alkoxycarbonyl ethyl, chlorethyl, acetoacetoxy ethyl, gamma-acetyl aminopropyl, benzyl, phenylethyl, phenyl, methoxy- or ethoxy-phenyl, or cyclohexyl; R8 is H, 1-4C alkyl, 2-3C hydroxyalkyl or 4-7C alkanoyl oxy-alkyl), are useful as dispersion dyes for colouring synthetic fibres, e.g. cellulose esters, polyamides or esp. polyesters, in yellow-orange to blue shades, with good fastness.

公开(公告)号：DE2365176A1

公开(公告)日：1975-07-10

申请号：DE2365176

申请日：1973-12-29

Applicant: BASF AG

Inventor： EILINGSFELD HEINZ DIPL CHEM DR ,  NIESS ROLF DIPL CHEM DR

IPC: C07D513/04

Abstract: Isothiazolo pyridines of formula (I) are (R1 = H, alkyl, alkoxycarbonyl or COOH; R2 = H, alkyl, Cl, Br, NO2, NH2, CN, acyloxy, acylamino or opt. substd. phenyl; R2 = H, alkyl, opt. substd. phenyl or OH). are diazo components for prodn. of dyes. (I) are prepd. from 2-mercapto-3-cyanopyridines by treating with chloramine.