2.
    发明专利
    未知

    公开(公告)号:DE3130805A1

    公开(公告)日:1983-02-24

    申请号:DE3130805

    申请日:1981-08-04

    Applicant: BASF AG

    Abstract: Ruthenium-on-charcoal and ruthenium-on-carbon black catalysts, containing from 0.1 to 5% by weight of iron, for the preparation of olefinically unsaturated alcohols by selective hydrogenation of the corresponding +60, beta -unsaturated carbonyl compounds in the liquid phase are prepared by modifying the catalyst with iron only after it has been impregnated with the ruthenium compound, and reducing the catalyst with hydrogen at from 400 DEG to 600 DEG C., with thorough mixing. The catalysts according to the invention are particularly useful for improving the industrially difficult hydrogenation of citral to give the soughtafter fragrances geraniol and nerol.

    5.
    发明专利
    未知

    公开(公告)号:DE2909601A1

    公开(公告)日:1980-09-25

    申请号:DE2909601

    申请日:1979-03-12

    Applicant: BASF AG

    Abstract: Chromane derivatives (I) I where R1, R2 and R3 are H or C1-C8-alkyl, R4 is H, C1-C8-alkyl or C1-C8-acyl and R5 is C1-C8-alkyl are prepared by reacting a hydroquinone (II) II with a Lewis acid or a Lewis acid derivative having the same action, and with a nitrile CH2=CH-C(R5)(OR6)CN (III), where R6 is H, C1-C4-acyl or C1-C4-alkyl, or with a compound from which III is formed in situ, in the presence of an inert solvent.

    7.
    发明专利
    未知

    公开(公告)号:DE3010504A1

    公开(公告)日:1981-10-01

    申请号:DE3010504

    申请日:1980-03-19

    Applicant: BASF AG

    Abstract: 2-Hydroxyalkylchromans (I) I where R1, R2, R3 and R4 are each H or C1-C8-alkyl, R' is H or an organic radical which can be split off hydrolytically or hydrogenolytically as R'-OH or R'-COOH, and m is 1, 2 or 3, are prepared by reacting a hydroquinone II II (a) with an alkenediol IIIa IIIa or (b) with an alkenediol IIIb IIIb or (c) with an alkenediol IIIc IIIc where R4' is a radical which during the condensation with II is converted to the radical R4, at from -50 DEG C. to 120 DEG C., in an inert solvent, in the presence of from 10 to 300 mole %, based on II, of a Lewis acid or of an adduct of a Lewis acid with a Lewis base which has a lower basicity than compound II.

    10.
    发明专利
    未知

    公开(公告)号:DE3103740A1

    公开(公告)日:1982-08-19

    申请号:DE3103740

    申请日:1981-02-04

    Applicant: BASF AG

    Abstract: Novel chroman derivatives I where R1, R2, R3 and R4 are each H or C1-C4-alkyl, R5 is sec.-C3-C8-alkyl or tert.-C4-C8-alkyl, R6 is H or R5, m is 1, 2 or 3, and n is 0, 1, 2 or 3, a process for the preparation of these compounds, and their use as stabilizers for plastics.

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