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Title: Biphenyldiphosphine compounds
Authors: Chan, ASC
Qiu, L
Issue Date: 22-Aug-2006
Source: US Patent 7,094,725 B2. Washington, DC: US Patent and Trademark Office, 2006.
Abstract: The present invention provides compounds of the formula (I) [refer to Patent file] wherein R is optionally substituted lower alkyl, cycloalkyl or aryl; R' is alkyl or aryl; n is zero or an integer of 1 or 2; or an enantiomer thereof; or an enantiomeric mixture thereof. The compounds of formula (I) are bridged C₂-symmetric biphenyldiphosphine analogs and, thus, may be employed as ligands to generate chiral transition metal catalysts which may be applied in a variety of asymmetric reactions. The compounds of the present invention are easily accessible in high diastereomeric and optical purity according to the methods disclosed herein.
Keywords: Biphenyldiphosphine compounds
Rights: Assignee: The Hong Kong Polytechnic University.
Appears in Collections:Patent

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