Arsine, triphenyl oxide

Arsine, lrimethylenebis(dimethyl-, 2.1006 Arsine, triphenyl-, 2, 1006 oxide... 

Silver(l) oxide Silver oxide (8) Silver oxide (Ag20) (9) (20667-12-3) Triphenylarsine Arsine, triphenyl- (8,9) (603-32-7)... 

A facile method for the preparation of a variety of stabilized arsonium ylides in good yield has been developed by the action of active methylene compounds with tertiary arsine oxide or tertiary arsine dihalide. Thus triphenyl-arsine dihalides react with a number of active methylene compounds in the presence of a tertiary amine to afford arsonium ylides (6) (40). The reaction of triphenylarsine oxide with active methylene compounds in the presence of either acetic anhydride or triethylamine-phos-phorus pentoxide gave rise to arsonium ylides (6) (32, 36. 65, 67). 

The [NdL4(C104)2]C104 complex has both ionic and bound perchlorate [218]. With L = triphenyl arsine oxide the complex types formed are [215] Ln(NCS)3L3, Ln(N03)3L2 Et0H, Ln(N03)3L3, Ln(NC>3)3L4. Triphenyl arsine oxide complexes appear to be stronger than the phosphine oxide based on the higher dipole moment of arsine. 

Oxo-rhenium complexes can catalyze various OAT reactions between suitable oxo-donors (XO = sulfoxides (R2SO) tertiary amine A-oxides (R3NO) pyridine A-oxide (C5H5NO, PyO) triphenyl-phosphine, -arsine, or -stilbene oxide (R3AO) (A = P, As, Sb) peroxides (Bn OOH, H2O2) ... 

By the action of phenyl magnesium bromide on arsenious oxide. Triphenyl arsine is obtained at the same time. ... 

Trialkyl and triphenyl substituted tertiary arsines and stibines are, like the phosphine analogues, suitable as ligands in transition metal complexes in several oxidation states, due to their low reduction potentials (cf Table 7 in Section III.A.l) and relatively high oxidation potentials (cf Table 14 in Section V.A). 

REDUCTIVE DEOXYGENATION OF ALCOHOLS AND KETONES N.N.N .N1-Tetramethyldiamidophosphorochloridate. REFORMATSKY REACTION Ethyl tri-chloroacetate. Lithium diisopropylamide. REVERSE WITTIG REACTION Triphenyl-arsine oxide. 

More limited investigations of the oxidation of triorganoarsines in the presence of transition metal complexes have been carried out but it appears that many of the same complexes which catalyze phosphine oxidation are also effective for arsines. The ruthenium complex, [Ru(NCSXN0XPPh3)2(02)], for example, has been found to be an efficient catalyst for the oxidation of triphenylarsine [79] the initial rate of oxidation being three to four times greater than the corresponding rate for triphenyl-phosphine oxidation under the same conditions. However, the rate of this oxidation was rapidly diminished by decomposition of the catalyst so that in a short time ca. 30 min) the catalyst was virtually ineffective. 

Some inhibitors are reduced on the surface to yield secondary products that are themselves the active inhibitors. In strong mineral acids, elements from Groups VI and VII tend to become protonated, a necessary prerequisite for many reduction reactions. Such is the case for triphenyl benzyl phosphonium chloride, which forms triphenyl phosphine, and triphenyl arsenic oxide, which undergoes protonation (permitting it to dissolve) and forms triphenyl arsine on the surface. Some sulfonium salts, e.g., tribenzylsulfonium hydrogen sulfate, and dibenzylsulfoxide also can be reduced by iron in HCI. 

Grundnes, J., Klaeboe, P. and Plahte, E. (1967) Spectroscopic studies of charge transfer complexes. XV. Triphenyl arsine oxide with iodine and iodine cyanide. Sel. Top. Struct. Chem., 265-275. 

---