@article {42761,
	title = {Bis(2-diphenylphosphinoxynaphthalen-1-yl)methane: transition metal chemistry, Suzuki cross-coupling reactions and homogeneous hydrogenation of olefins},
	journal = {Dalton Transactions},
	year = {2006},
	month = {NOV},
	pages = {1322-1330},
	type = {Article},
	abstract = {<p>Transition metal complexes of bis(2-diphenylphosphinoxynaphthalen-1-yl)methane (1) are described. Bis(phosphinite) 1 reacts with Group 6 metal carbonyls, [Rh(CO)2Cl]2, anhydrous NiCl2, [Pd(C3H5)Cl]2/AgBF4 and Pt(COD)I2 to give the corresponding 10-membered chelate complexes 2, 3 and 5{\textendash}8. Reaction of 1 with [Rh(COD)Cl]2 in the presence of AgBF4 affords a cationic complex, [Rh(COD){Ph2P({\textendash}OC10H6)({\textmu}-CH2)(C10H6O{\textendash})PPh2-κP,κP}]BF4 (4). Treatment of 1 with AuCl(SMe2) gives mononuclear chelate complex, [(AuCl){Ph2P({\textendash}OC10H6)({\textmu}-CH2)(C10H6O{\textendash})PPh2-κP,κP}] (9) as well as a binuclear complex, [Au(Cl){{\textmu}-Ph2P({\textendash}OC10H6)({\textmu}-CH2)(C10H6O{\textendash})PPh2-κP,κP}AuCl] (10) with ligand 1 exhibiting both chelating and bridged bidentate modes of coordination respectively. The molecular structures of 2, 6, 7, 9 and 10 are determined by X-ray studies. The mixture of Pd(OAc)2 and 1 effectively catalyzes Suzuki cross-coupling reactions of a range of aryl halides with aryl boronic acid in MeOH at room temperature or at 60 {\textdegree}C, giving generally high yields even under low catalytic loads. The cationic rhodium(I) complex, [Rh(COD){Ph2P({\textendash}OC10H6)({\textmu}-CH2)(C10H6O{\textendash})PPh2-κP,κP}]BF4 (4) catalyzes the hydrogenation of styrenes to afford the corresponding alkyl benzenes in THF at room temperature or at 70 {\textdegree}C with excellent turnover frequencies.</p>},
	doi = {10.1039/b510589g},
	author = {Punji, Benudhar and Mague, Joel T. and Balakrishna, Maravanji S.}
}
