Ligand and asymmetric catalyst
    8.
    发明专利

    公开(公告)号:JP2004196710A

    公开(公告)日:2004-07-15

    申请号:JP2002367304

    申请日:2002-12-18

    发明人: NAKADA MASAHISA

    CPC分类号: Y02P20/52

    摘要: PROBLEM TO BE SOLVED: To obtain a new ligand useful as an asymmetric catalyst for carrying out carbon-carbon bond reaction in high enantio-selectivity in a high yield.
    SOLUTION: The ligand is represented by general formula (R
    a , R
    b , R
    c and R
    d are each a substituted group, preferably R
    a and R
    b are each hydrogen or a phenyl group and R
    c and R
    d are each a group selected from a methyl group, an isopropyl group, a t-butyl group and a phenyl group). The ligand forms a complex with a metal to give an asymmetric catalyst. The metal to form the complex is preferably selected from Cr, Zn, Ti, Mn, Pd and Rh.
    COPYRIGHT: (C)2004,JPO&NCIPI

    METHOD FOR PRODUCING TERTIARY ALCOHOL ESTER

    公开(公告)号:JP2002161070A

    公开(公告)日:2002-06-04

    申请号:JP2000358463

    申请日:2000-11-24

    申请人: DAICEL CHEM

    摘要: PROBLEM TO BE SOLVED: To provide a method for producing a tertiary alcohol ester, by which the tertiary alcohol ester having a cyclic group bound to a tertiary carbon atom can easily and efficiently be produced from a carboxylic acid derivative. SOLUTION: This method for producing the tertiary alcohol ester, comprising reacting an organic metal compound of the general formula 1 [the ring Z is a monocyclic/polycyclic non-aromatic ring or aromatic ring; R1 is a halogen or OR (R is H or a hydrocarbon group)] with an organic metal compound of the general formula 3: R2-M (3) [R2 is a hydrocarbon group; M is a metal atom which may have one or more ligands, or MgY (Y is a halogen)] and a carboxylic acid halide of the general formula 5 (R3 is a hydrocarbon or a heterocyclic group; X is a halogen) to obtain the tertiary alcohol ester of the general formula 6.