Methyl gold

AsjC iHn, Arsine, 1,2-phenylenebis(di-methyl-, gold complex, 26 89 As,H40, Rb4W2,, 4H,0, Tungstate (4-). aquadihydroxohenhexacontaox-obis(trioxoarsenato(Ill)]henicosa-, te-trarubidium, tetratricontahydrate, 27 113... 

AsFe04C22H,5, lron(0), tetracarbonyl(tri-phenylarsine)-, 26 61, 28 171 AsjCijHij, Arsine, l,2-phenylenebis(di-methyl-, gold complex, 26 89 nickel complex, 28 103 AsjCljNRuSCjgHjo, Ruthenium(II), tri-... 

Figure Bl.19.30. Height and friction images of a spin-cast polystyrene-poly(methyl methacrylate) blend obtained with (a) gold and (b) silica probes under perfluorodecalin. Note the reversal of frictional contrast and the high spatial resolution. (Taken from [142], figure 7.)...

Lenk T J, Hallmark V M, Rabolt J F, Haussling L and Ringsdorf H 1993 Formation and characterization of self-assembled films of sulphur-derivatized poly(methyl methacrylates) on gold Macromolecules 26 1230-7... 

The raw precious metal concentrate is totally dissolved in hydrochloric acid—chlorine solution to form the soluble chloride ions of each of the metals. Silver remains as insoluble silver chloride and can be filtered off. Gold, in the form of [AuClJ, is extracted with, eg, tributyl phosphite or methyl isobutyl ketone. Base metals are also extracted in this step, and are removed from the organic phase by scmbbing with dilute hydrochloric acid (HCl). Iron powder is then used to reduce the gold species and recover them from the organic phase. 

Anhalojiidine, C Hi OgN, crystallises in small octahedra, m.p. 160-1°. The hydrochloride, B. HCl, forms prisms, but the platinum and gold salts are amorphous the picrate has m.p. 201-8°. The alkaloid contains two methoxyl groups, yields a monobenzoyl derivative, m.p. 189° and with methyl iodide forms A-methylanhalonidine hydriodide (pellotine hydi-iodide), yellow prisms, m.p. 125-130°. 

The gold complex, generated in situ from bis(4-isocyanocyclohexyl)gold(I) tetrafluoroborate and (A)-A-methyl-,V-[2-(dialkylamino)ethyl]-l-[(5)-r,2-bis(diphenylphosphino)ferrocenyl]eth-ylamine, is an effective catalyst for the aldol reaction of various aldehydes with methyl iso-cyanoacetate to give the trans- and cw-4,5-dihydro-l,3-oxazoles. Depending on the aldehyde, the transjeis product ratio ranges from 84 16 to 100 0, and the ee of the main diastereomer is between 72 and 97%26. 

Methyl-[ 5,7-dinitro-8-hydroxy-naphthyl-(l)] -ether, 2,4-Dinitro-8-methoxy-naphthol-(l) ). (02N)2CioH4(OH).O.CH3, mw 264.21, N 10.61%, OB to C02 -121.12%, gold plates from ale, mp 179—80° (decompn). Sol in dil alkali ale. Prepn from 2,4-dinitro-1,8-dime thoxy-naphthalene by reaction with 2N NaOH Ref Beil 6, 5284 ... 

Hild DN, Laughlin JM, Gold RE. 1989. Laundry parameters as factors in lowering methyl parathion residue in cotton polyester fabrics. Arch Environ Contam Toxicol 18 908-914. 

Laughlin J, Gold RE. 1987. The vaporization of methyl parathion from contaminated cotton fabrics. Textile Chemist and Colorist 19 39-42. 

Laughlin J, Gold RE. 1989a. Evaporative dissipation of methyl parathion from laundered protective apparel fabrics. Bull Environ Contam Toxicol 42 566-573. 

Methanol is a major bulk chemical, and its global annual production exceeds 37 million tons. It is mainly used for the production of formaldehyde and methyl 6butyl ether (MTBE). Especially, formaldehyde is dominantly used for producing resins. At present, methanol and its decomposed derivatives can be oxidized to CO2 and H2O by the proper selection of supported noble metal catalysts such as palladium, platinum, and gold. 

---