52.
    发明专利
    未知

    公开(公告)号:ES2172354T3

    公开(公告)日:2002-09-16

    申请号:ES99955265

    申请日:1999-05-21

    Applicant: BASF AG

    Abstract: Process for producing butyrolactones of the general formula Iwhere R1 and R2 are each hydrogen, alkyl, hydroxyalkyl, substituted or unsubstituted aryl or substituted or unsubstituted trialkylsilyl, by reacting alkynes of the general formula IIwhere R1 and R2 are each as defined above, with carbon monoxide and water in the presence of a rhodium catalyst under pressures from 20 to 300 bar and hydrogenating the unhydrogenated 2(5H)-furanone intermediates comprisesa) reacting the carbonylation reaction mixture with hydrogen at from 150 to 250° C. and from 100 to 300 bar,b) removing the precipitated catalyst and returning it into the carbonylation reaction, andc) subjecting the catalyst-free reaction mixture to a distillation to recover the butyrolactone.

    METHOD FOR PRODUCING 1-SUBSTITUTED 5- OR 3-HYDROXYPYRAZOLES

    公开(公告)号:PL348751A1

    公开(公告)日:2002-06-03

    申请号:PL34875199

    申请日:1999-11-06

    Applicant: BASF AG

    Abstract: The invention relates to a process for preparing 1-substituted 5- and/or 3-hydroxypyrazoles of the formulae I and IIin which R1 is C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl, C3-C6-cycloalkyl or C1-C4-alkoxy, where these groups may be substituted by halogen, C1-C4-alkoxy, phenoxy, C1-C6-alkoxycarbonyl, C1-C6-alkylthiocarbonyl or by a cyclic ring system having 3-14 ring atoms, which comprises reactingan alkyl 3-alkoxyacrylate of the formula IIIin which R2, R3 independently of one another are C1-C6-alkyl or C3-C6-cycloalkyl with a hydrazine of the formula IVin which R1 is as defined abovea) at a pH of 6-11 to give 5-hydroxypyrazoles of the formula I orb) at a pH of 11-14 to give 3-hydroxypyrazoles of the formula II.

    55.
    发明专利
    未知

    公开(公告)号:DE59803544D1

    公开(公告)日:2002-05-02

    申请号:DE59803544

    申请日:1998-08-28

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP98/05525 Sec. 371 Date Feb. 17, 2000 Sec. 102(e) Date Feb. 17, 2000 PCT Filed Aug. 28, 1998 PCT Pub. No. WO99/11611 PCT Pub. Date Mar. 11, 1999A catalyst used for preparing thiochloroformates by reacting thiols with phosgene is a cyclic urea or cyclic thiourea which may be in the form of a salt obtainable by reaction with a hydrohalic acid or phosgene.

    METHOD FOR PRODUCING 1-SUBSTITUTED 5- OR 3-HYDROXYPYRAZOLES

    公开(公告)号:BG105538A

    公开(公告)日:2002-04-30

    申请号:BG10553801

    申请日:2001-05-22

    Applicant: BASF AG

    Abstract: The invention relates to a method for producing 1-substituted 5- and/or 3-hydroxypyrazoles of formulae wherein R1 represents C1-C6-alkyl,C2-C6-alkenyl, C2-C6-alkinyl, C3-C6-cycloalkyl or C1-C4-alkoxy, whereby these groups can be substituted by halogen, C1-C4-alkoxy, phenoxy, C1-C6-alkoxycarbonyl, or a cyclic ring system with 3-14 ring atoms, by reacting a 3-alkoxyacrylic acid alkyl ester for formula wherein R2, R3 independently means C1-C6-alkyl or C3-C6 cycloalkyl, with a hydrazine or formula wherein R1 has the above cited meaning, a) at a pH value of 6-11 to form 5-hydroxypyrazoles of formula or b) at a pH value of 11-14 to form 3-hydroxypyrazoles of formula (II). 13 claims

    58.
    发明专利
    未知

    公开(公告)号:AT215070T

    公开(公告)日:2002-04-15

    申请号:AT98948890

    申请日:1998-08-28

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP98/05525 Sec. 371 Date Feb. 17, 2000 Sec. 102(e) Date Feb. 17, 2000 PCT Filed Aug. 28, 1998 PCT Pub. No. WO99/11611 PCT Pub. Date Mar. 11, 1999A catalyst used for preparing thiochloroformates by reacting thiols with phosgene is a cyclic urea or cyclic thiourea which may be in the form of a salt obtainable by reaction with a hydrohalic acid or phosgene.

    METHOD FOR PRODUCING CARBOXYLIC ACID CHLORIDES

    公开(公告)号:HU0104207A2

    公开(公告)日:2002-02-28

    申请号:HU0104207

    申请日:1999-10-29

    Applicant: BASF AG

    Abstract: The invention relates to a process for the preparation of acid chlorides by reaction of carboxylic acids, carboxylic anhydrides, cyclic carboxylic esters or sulfonic acids with phosgene in the presence of a catalytic amount of a compound from the group consisting of N,N,N',N'-tetrasubstituted amidinium halides (I), N,N,N'-trisubstituted amidinium hydrohalides (II) and N,N,N'-trisubstituted amidines (III).

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