TY - JOUR
T1 - Synthesis of palladium(II) and platinum(II) complexes with crown ether phosphane ligands
T2 - Stille coupling of aryl iodides in water
AU - Fresneda, Jorge
AU - De Jesús, Ernesto
AU - Gómez-Sal, Pilar
AU - Mardomingo, Carmen López
PY - 2005/4/22
Y1 - 2005/4/22
N2 - The crown ether phosphanes PAr*Ph2 (1) and PAr*2R [Ar* = 3,4-(18-crown-6)-phenyl; R = Me (2); R = Ph (3)], prepared from PCl2R and Ar*Li, have been studied. The syntheses and characterization of their oxides (4-6), and their BH3 (7-9), PdCl2 (10-12), and PtCl2 (13-15) complexes are reported. The molecular structure of the borane complex PAr* 2Ph·BH3 (9) has been determined by X-ray structural analysis. Spectroscopic data suggest that phosphanes 1-3 have similar electronic properties and steric requirements to the corresponding phenylphosphane ligands PPh2Me and PPh3. Crown ether methylphosphane 2 and its complexes are remarkably water soluble, but 1 and 3 are only slightly soluble. Palladium(II) complexes 14 and 15 have been tested as catalysts in the Stille coupling of phenyltrichlorostannanes and aryl iodides in water.
AB - The crown ether phosphanes PAr*Ph2 (1) and PAr*2R [Ar* = 3,4-(18-crown-6)-phenyl; R = Me (2); R = Ph (3)], prepared from PCl2R and Ar*Li, have been studied. The syntheses and characterization of their oxides (4-6), and their BH3 (7-9), PdCl2 (10-12), and PtCl2 (13-15) complexes are reported. The molecular structure of the borane complex PAr* 2Ph·BH3 (9) has been determined by X-ray structural analysis. Spectroscopic data suggest that phosphanes 1-3 have similar electronic properties and steric requirements to the corresponding phenylphosphane ligands PPh2Me and PPh3. Crown ether methylphosphane 2 and its complexes are remarkably water soluble, but 1 and 3 are only slightly soluble. Palladium(II) complexes 14 and 15 have been tested as catalysts in the Stille coupling of phenyltrichlorostannanes and aryl iodides in water.
KW - Aqueous-phase catalysis
KW - C-C coupling
KW - Crown compounds
KW - Palladium
KW - Phosphane ligands
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U2 - 10.1002/ejic.200400906
DO - 10.1002/ejic.200400906
M3 - Article
AN - SCOPUS:17844370823
SN - 1434-1948
SP - 1468
EP - 1476
JO - European Journal of Inorganic Chemistry
JF - European Journal of Inorganic Chemistry
IS - 8
ER -