Patents Assigned to Takasago Intl. Corp.
  • Patent number: 6184381
    Abstract: This document describes a novel and practically excellent process for the preparation of optically active compounds, such as optically active alcohols or amines which are useful for various applications, for example, as synthetic intermediates of pharmaceuticals, liquid crystal materials, and reagents for optical resolution, wherein a hydrogen transfer type asymmetric reduction is carried out in the presence of both a transition metal complex and an optically active nitrogen compound or a transition metal complex having an optically active nitrogen compounds as an asymmetric ligand, and a hydrogen-donating organic or inorganic compound.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: February 6, 2001
    Assignees: Japan Science & Technology Corp., NKK Corp., Takeda Chemical Industries, Asahi Kasei Kogyo Kabushiki Kaisha, Takasago Intl. Corp.
    Inventors: Takao Ikariya, Shohei Hashiguchi, Jun Takehara, Nobuyuki Uematsu, Kazuhiko Matsumura, Ryoji Noyori, Akio Fujii