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US5556997A Enhanced synthesis of racemic metallocenes 失效
增强外消旋金属茂合成

Enhanced synthesis of racemic metallocenes
摘要:
Chiral metallocenes are prepared by reacting a salt of an asymmetric bis(cyclopentadienyl) moiety containing ligand with a chelate diamine adduct of a transition, lanthanide, or actinide metal halide in an organic solvent medium so as to produce said chiral metallocene.
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