A chiral diphosphine containing hemilabile ether donor groups and its use in rhodium asymmetric hydroboration of styrene

Jose L. Ruiz, Teresa Flor, J. Carles Bayón

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13 Citations (Scopus)

Abstract

The new homochiral diphosphine (R,R) -o-C6H4[CH2OCH2CH(Me)PPh 2]2 (1) was prepared from ethyl lactate in five steps. Because of the two hemilabile ether groups, the ligand can be visualized as a diphosphine containing two intramolecular solvent molecules. The cationic Rh(I) complex [Rh(1)](BF4) was prepared and used as the catalyst in the asymmetric hydroboration of styrene with catecholborane. The catalytic system is chemo- and regioselective, but it yields low enantiomeric excess. ©1999 Elsevier Science S.A. All rights reserved.
Original languageEnglish
Pages (from-to)484-486
JournalInorganic Chemistry Communications
Volume2
Issue number10
DOIs
Publication statusPublished - 1 Jan 1999

Keywords

  • Asymmetric catalysis
  • Catalytic hydroboration
  • Chiral diphosphine
  • Hemilabile ligand
  • Rhodium complexes

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