METHOD FOR THE RECYCLING OF A LEWIS ACID

    公开(公告)号:AU2003246375A1

    公开(公告)日:2004-02-02

    申请号:AU2003246375

    申请日:2003-07-04

    Applicant: BASF AG

    Abstract: A process for the recovery of a Lewis acid from a reaction mixture (I) which has been obtained in the hydrocyanation of an olefinically unsaturated compound to a nitrile which has a miscibility gap with water under certain pressure and temperature conditions, in the presence of a catalyst system comprising a Lewis acid and a complex compound. The method comprises a) removing the complex compound from mixture (I) to give a mixture (II), b) adding water to mixture (II) and placing mixture (II) under pressure and temperature conditions to provide a phase (III) and a phase (IV), c) adding a liquid diluent (V) which c1) does not form an azeotrope with water and whose boiling point under certain pressure conditions is higher than that of water, or c2) forms an azeotrope or heteroazeotrope with water under certain pressure conditions, to phase (III), d) subjecting the mixture of phase (III) and liquid diluent (V) to distillation under the pressure conditions mentioned in step c1) or c2), and e) subjecting mixture (VII) to hydrocyanation of an olefinically unsaturated compound to give the nitrile.

    50.
    发明专利
    未知

    公开(公告)号:BR0015200A

    公开(公告)日:2002-06-18

    申请号:BR0015200

    申请日:2000-10-25

    Applicant: BASF AG

    Abstract: New phosphites (I), with alkylaryl, arylaryl and/or condensed aryl groups, have 1, 2 or 3 o-substituted and optionally 1 or 2 m- and/or p-substituted aryl groups. New phosphites of formula (I), with alkylaryl, arylaryl and/or condensed aryl groups, have 1, 2 or 3 o-substituted and optionally 1 or 2 m- and/or p-substituted aryl groups; P(O-R 1>)(O-R 2>) y(O-R 3>) z(O-R 4>) p (I) R 1>an aromatic group with a 1-18 carbon (C) alkyl, an aromatic substituent or a condensed aromatic system in the o-position to the oxygen (O) atom linking the phosphorus (P) atoms to the aromatic system; R 2>a similar aromatic group substituted in the m-position; R 3>a similar aromatic group substituted in the p-position; R 4>an aromatic group with a different substituent in the o-, m- or p-position and a hydrogen (H) atom in the o-position; x : 1 or 2; y, z, p : 0, 1 or 2; (x+y+z+p) : 3 Independent claims are also included for: (a) new transition metal complexes (II) with (I) as ligand; (b) the preparation of (I); (c) the preparation of (II); (d) the addition of hydrogen cyanide to an olefinic double bond in the presence of (II) as catalyst; and (e) the isomerization of organic nitriles in the presence of (II) as catalyst.

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