Cadmium acetate diethyl

The zinc and cadmium organosilyl compounds are about equally unstable, in sharp contrast to the mercury compounds. The reaction of lithium tetrakis(trimethylsilyl) aluminate with zinc acetate in diethyl ether yields (25 %) bis(trimethylsilyl) zinc [435]. This compound can be kept for about three weeks under an inert gas at — 20 °C. The reaction of lithium tetrakis(trimethylsilyl) aluminate with cadmium acetate forms bis(trimethylsilyl) cadmium [435] (27%, very unstable, sensitive to light). Bis(tri-t-butylsilyl) cadmium [436] (m. p. 140 °C, slightly yellowish crystals which turn greenish black on exposure to air) can be obtained from tri-r-butylsilane and diethylcadmium (Eq. 3.230) ... 

Many dialkyl and diaryl cadmium compounds have found use as polymerization catalysts. For example, the diethyl compound catalyzes polymerization of vinyl chloride, vinyl acetate, and methyl methacrylate (45), and when mixed with TiCl can be used to produce polyethylene and crystalline polypropylene for filaments, textiles, glues, and coatings (45). With >50% TiCl diethyl cadmium polymerizes dienes. Diethyl cadmium maybe used as an intermediate ethylating agent in the production of tetraethyllead. The diaryl compounds such as diphenylcadmium [2674-04-6]> (C H Cd, (mp 174°C) are also polymerization catalysts. These compounds are also prepared using Grignard or arylUthium reagents in tetrahydrofiiran (THF) solvent but may be prepared by direct metal substitution reactions such as ... 

Pyrrole- and indole-carboxylic acid chlorides react with dialkyl- and diaryl-cadmium to yield the ketones and it is noteworthy that the reaction of the anhydride of indole-2,3-dicarboxylic acid with diphenylcadmium produces 3-benzoylindole-2-carboxylic acid and not its isomer (53JCS1889). The ability of l-methylindole-2-carboxylic acid to react with nucleophiles is enhanced by conversion into the mixed anhydride with methanesulfonic acid. The mixed anhydride reacts with carbanions derived from diethyl malonate and from methyl acetate to yield the indolyl (3- keto esters (80TL1957). 

Extractable metals in plastics (e.g. those used as kitchen utensils) can be determined following a suitable acid leach. Cadmium has been determined in this way using either an ethanol/acetic acid/water (10 + 3 4- 87) or diethyl ether/4% acetic acid extractant [192]. The extract was evaporated to dryness and redissolved in 1M nitric acid prior to aspiration into an air/acetylene flame and measured at 228.8 nm. 

Acetonation of the diethyl dlthloacetale of D- and L-arabinose gave the 2,3 4f5-di-O-isopropylidene acetals as oils the reaction was shown to proceed via the first-formed 4,5-acetal. Demercaptal-ation with mercury(II) chloride - cadmium carbonate gave 2,3s4 5-di-O-lsopropylldene-aldehydo-D-arabinose (1), whereas the literature procedure employing mercury(II) chloride - mercury(II) oxide gave a mixture of (1) and 1,2 3 4-di-0-isopropylidene-/ -D-arabinose (2). A trace of acid rapidly and completely converted (1) to (2). 

Tris (ethylenediamine) cadmium dihydroxide Zinc chloride solvent, cellulose acetate Acetylacetone Benzaldehyde Benzyl acetate Butyl formate Cyclohexanone Cyclopentane Diacetone alcohol Diethyl phthalate Ethylbenzene Ethylene glycol acetate... 

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