Arsine dimethyl

The analogous arsine, dimethyl(pentafluorophenyl)arsine, C6FsAs(CH3)2, has not been previously reported however, the necessary precursors, (pentafluorophenyl)arsonous dichloride, CeFsAsCU, or dimethylarsinous iodide, (CH3)2AsI, are known. 

AsAgFsSi6, Arsenate, hexafluoro-, bis-(cycZo-octasulfur)silver(l -h), 24 74 AsBrsFgS, Arsenate, hexafluoro-, tribromo-sulfur(IV), 24 76 AsQH, Arsine, dimethyl-molybdenum complex, 25 169 AsCigHis, Arsine, triphenyl-chromium complexes, 23 38 ASC24H10, Arsonium, tetraphenyl-... 

AMA cacodyhc acid [75-60-5] ammonium methylarsonic acid dimethyl arsinic acid C2H2ASO2... 

A reagent more reactive than tris(dimethylamino)arsine employed by Weingarten and White 39) was tetrakis(dimethylamino)titanium (145). With this compound it was possible to prepare N,N-dimethyl(l-isopropyl-2-methylpropcnyl)amine (147) from diisopropyl ketone. Weingarten and White 39) have suggested a possible mechanism for this reaction (see p. 88). If benzaldehyde 39,111), formaldehyde 111), or acetaldehyde 39) is used, the corresponding gem diamine or aminal (143) is formed. 

Arsine, 3-dimethylarsinopropylbis(but-3-enyI)-, 2, 1010 Arsine, dimethylphenyl-, 2,1006 Arsine, diphenylchloro-, 3,256 Arsine, diphenylcyano-, 3,256 Arsine, ethylenebis(dichloro-, 2,1005 Arsine, ethylenebis(dimethyl-. 2, 1006 Arsine, ethylenebis(diphenyl-, 2,1006 Arsine, ethylidynetris(methylenebisdimethyl-, 2, 1007 Arsine, ethylmethylphcnyl-complcxcs... 

Arsine, trifluorohaloethylenebis(dimethyl-, 2, 1006 Arsine, trimethyl-, 2, 1005,1006 oxide... 

The element symbols within each formula are arranged according to a modified Hill system in which the order is metal(s), C, H and then any remaining symbols arranged alphabetically. Compounds containing two (or more) different metals appear twice (or more), being listed under each metal. Common ligand abbreviations which appear in the text have also been used in the index. These include acac (acetylacetone), bipy (2,2 -bipyridyl), diars [o-phenylenebis(dimethyl-arsine)], dien (diethylenetriamine), etc. 

Concerning anthropogenic sources, methyl arsenic compounds such as methyl arsonic acid and dimethylarsinic acid have been used as herbicides, and were once a significant source of environmental residues. Dimethyl-arsinic acid (Agent Blue) was used as a defoliant during the Vietnam War. 

Carbon monoxide cyanogen, hydrogen cyanide nitrites arsine aniline, dimethyl aniline, toluidine nitrobenzene hydrogen sulphide (causes respiratory paralysis by impairment of oxygen utilization in the central nervous system). 

A. Preparation.—The first reverse Wittig olefin synthesis has been reported. Triphenylphosphine oxide and dicyanoacetylene at 160 °C gave the stable ylide (1 78%) the reaction was reversed at 300 °C. No comparable reaction was observed with a variety of other activated acetylenes but tri phenyl arsine oxide gave the corresponding stable arsoranes with dicyanoacetylene (— 70 °C), methyl propiolate, hexafluorobut-2-yne, dimethyl acetylene dicarboxylate, and ethyl phenylpropiolate (130 °C). 

The first report of a heart-imaging agent in animals involved a 99mTc(IH) complex with 0-phenylenebis(dimethyl arsine) [30], Several other bidentate /[-acceptor ligands were investigated and early studies focused on a prototype... 

Caution. The arsenic compounds used here are extremely toxic and must be handled only in an efficient hood. Dimethyl-arsine is particularly dangerous because of its volatility (b.p. 36°/760 mm.) and its spontaneous flammability. 

The results show that good recoveries were obtained from artificial seawaters, even at the 0—05 xg/l level, but for natural seawater samples the recoveries were lower (74-85%). This effect could be attributed to organic sample components that eluted from the column together with dimethyl arsinate. 

This report is the first volume in the series Acute Exposure Guideline Levels for Selected Airborne Chemicals. AEGL documents for four chemicals—aniline, arsine, monomethylhydrazine, and dimethyl hydrazine—are published as an appendix to this report. The subcommittee concludes that the AEGLs developed in those documents are scientifically valid conclusions based on the data reviewed by NAC and are consistent with the NRC guideline reports. AEGL reports for additional chemicals will be presented in subsequent volumes. 

Domino-Heck Reactions-General Procedure 5.6 mg (25 pmol) of palladium(II) acetate and 55 pmol of the arsine ligand were dissolved in 3 ml of dry dimethyl formamide and the solution was stirred at 65°C (40°C for trimethylsilylacetylene) for 15 mitt Then, 127 mg (1.35 mmol) N-Benzoyl-2-azabicyclo[2.2.1]hept-5-en-3-one, 1 mmol of the aryl compound. Four hundred and eighty-eight microliters (3.50 mmol) of triethylamine, and 3.00 mmol of the phenylacetylene (or silylmethyl-acetylene) were added rapidly in one portion. The mixture was heated at the same temperature for 24 h. After cooling down to room temperature 50 ml of brine were added, the reaction mixture was extracted with ethyl acetate and dried over MgSO. The solvent was evaporated, the residue purified by column chromatography (n-Hexan-Ethyl acetate 4 1). 

For this reason Long (7, 8) and Erskine 8—11) prepared two series of ligands the ortho, meta and para-styryl dimethyl arsines Long), and the o, m and -allylphenyldimethylarsines Erskine) and studied the bromination of these compounds, their methiodides and their platinum (II) and rhodium(III) complexes. 

A spectrophotometric technique showed that the isomeric vinyl phenyl dimethyl arsines reacted at similar rates in carbon tetrachloride solution, as did the isomeric allylphenyl dimethyl arsines 8). The bromination of the methiodides of the allyl compounds was studied to see if the presence of the positively charged group affected the reactivity of the... 

The rhodium(III) complexes of the isomeric st oryl dimethyl arsines were all of the type RhBrs (arsine) 3 and all reacted with an excess of bromine (> 6 mols) giving complexes of the t3 e RhBrs (arsine Br2)3, in which all the double bonds of the ligands have been saturated by addition of bromine. No difference in reactivity between any of the isomers was noted (5). 

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