2001 hydrosilylation, silylation, phosphorylation

hydrosilylation, silylation, phosphorylationO 0278

43 - 061Coordination of (β-N-Sulfonylaminoalkyl)phosphines and Their Anal-ogous Arsines to PdII and PtII . Application of the Pd-Complexes asChiral Catalysts in Asymmetric Hydrosilylation of 1,3-Dienes. —Optically active (N-mesylamino)phenylethylphosphine and the correspondingarsine are prepared as novel ligands for Pd- or Pt-catalyzed reactions. Adetailed NMR study of the corresponding complexes of the phosphine ligandwith Pt and Pd catalysts is presented. Asymmetric 1,4-hydrosilylation of variouscyclic dienes (I) is smoothly catalyzed by Pd–phosphine complexes, while thecorresponding arsine complexes are less effective. However, the hydrosilylationof butyl-substituted cyclohexadiene (VIII) proceeds only in the presence ofthe arsine complex, although in low enantioselectivity. — (GUSTAFSSON,MAGNUS; BERGQVIST, KARL-ERIK; FREJD, TORBJOERN; Perkin 1(2001) 12, 1452-1457; Org. Chem. 2, Cent. Chem. Chem. Eng., Lund Univ.,S-221 00 Lund, Swed.; EN)

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