Phosphine, methyldiphenyl

Phosphine, methyl-, 2, 992 Phosphine, methyldiphenyl-, 2,992 Phosphine, methylenebis(diphenyl-, 2, 993 Phosphine, methylphenylpropyl-complexes inversion, 1,199... 

PChH , Phosphine, dimethylphenyl-iron complex, 26 61 PC, Hn, Phosphine, diphenyl-manganese complex, 26 158, 226-230 ruthenium complex, 26 264 PC 3H27, Phosphine, tributyl-iron complex, 26 61 PC,H , Phosphine, methyldiphenyl-iron complex, 26 61 PC, H Phosphine, triphenyl-cobalt complex, 26 190-197 cobalt-gold-ruthenium, 26 327... 

C ]H,o, Fluorene, iridium complex 29 232 C]3H jNO, Formanide,lV-ll-(l-naphthal-enyl)ethyl]-, rhenium complex 29 217 CijHijP, Phosphine, methyldiphenyl-, iron complex 26 61, 28 171 molybdenum complex, 27 9 nickel complex, 28 101 tungsten complexes. 27 10, 28 328,28 331 CijHio, Acetylene, diphenyl-, molybdenum complex, 26 102-105, 28 11, 13 C14H12, Benzene, 1,2-ethenediylbis-, platinum complex, 26 140 C14H14, Benzene. l,l -(l,2-ethanediyl)-bis-, 26 192... 

I Ci3H,3, Phosphine, methyldiphenyl-, iron complex, 26 61 molybdenum complex, 27 9 nickel complex, 28 101 tungsten complex, 28 328 PC14H23, Phosphine, di-tert-butylphenyl-, palladium and platinum complexes, 28 114,116... 

Elektroden- material Triphenyl- phosphin (%) Methyldiphenyl- phosphin (%) Phosphinoxid (%) Benzol (%)... 

Decarbonylation of Aldehydo Sugar Derivatives with Chlorotris(methyldiphenyl-phosphine)rhodium(I), D. J. Ward, W. A. Szarek, and J. K. N. Jones, Chem. Ind. (London), (1976) 162-163. 

WITTIG-HORNER REAGENTS Carbome-thoxyethyl(diphenyl)phosphine oxide. Diethoxy methyldiphenyl phosphine oxide. Diethyl [(2-tetrahydropyranyloxy)-methyl]-phosphonate. Methyl bis(trifluoroethyl)-phosphonoacetate. N-Morpholinodiphenyl-phosphine oxide. Triethylphosphonoace-tate. 

PPh3 triphenylphosphine phen 1, 10-phenanthroline dmp 2,9-dimethyl-l,10-phenanthroline PPhaCHa methyldiphenyl-phosphine bpy 2,2 -bipyridine biq 2,2 -biquinoline dpp 2,9-diphenyl-l,10-phenanthroline. 

The asymmetric hydrosilylation of a-methylstyrene with methyldi-chlorosilane has been catalyzed by (/ )-benzylmethylphenylphosphine complexes of platinum(II) 302) or nickel(II) 304) to give a 5 or 17.6% excess of one enantiomer in the addition product, 2-phenylpropyl-methyldichlorosilane. The corresponding palladium(II) complexes were, however, only slightly useful for asymmetric synthesis in hydrosilylation of olefins. Nevertheless, palladium(II) complexes of methyldiphenyl-phosphine or epimeric neomethyldiphenylphosphine, where the dissymmetry is remote from the phosphorus, are especially useful for the induction of asymmetry in the hydrosilylation of styrene and some cyclic conjugated dienes 199). A similar procedure has been used for... 

Cyclooctadiene)bis(methyldiphenyl-phosphine)-iridium hexafluorophos-phate, 115-116... 

Olefin inversion.2 Lithium diphenylphosphide in THF opens epoxides stereo-specifically quatemization of the crude product with methyl iodide leads to betaines, which fragment under mild conditions (25°) to give an olefin and methyldiphenyl-phosphine oxide. The product olefins are formed with inversion of stereochemistry relative to the starting epoxide owing to SN2 epoxide opening followed by cis elimination of the phosphine oxide. Thus the oxide of fraus-stilbene (1) is converted into the betaine (2), which at 25° gives cis-stilbene (3) in 95% yield overall. The conversion is stereospecific (> 98%). Similarly cis-stilbene can be converted into franx-stilbene. 

The reaction is carried put in an atmosphere of scrupulously dry, air-free argon or helium. Tetrachlorobis(methyldiphenyl-phosphine)molybdenum(IV) (1.6 g., 2.5 mmoles) is added slowly with stirring to 30 ml. of ethanol containing 1.2 g. (6 mmoles) of methyldiphenylphosphine and 0.8 g. (21 mmoles) of sodium tetra-... 

HYDROGENATION, CATALYSTS (1,5-Cyclooctadiene)bis(methyldiphenyl-phosphine)iridium(I) hexafluorophos-phate. Di- i-chlorodichlorobis(penta-methylcyclopentadienyOrhodium. Dichlorotris(triphenyljJhosphine)-ruthenium(II). Palladium catalysts. Palladium hydroxide. Rhodium. 

Benzyl diphenylphosphinodithioate allowed to react at -78° with n-butyllithium in tetrahydrofuran, then treated with excess methyl iodide -> methyldiphenyl-phosphine sulfide. Y almost 100%. F. e. s. K. Goda et al., Tetrah. Let. 1976,181. 

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