Copper compounds acetate

Effect of Anions in Copper Compounds. Since the copper stearate was the most effective catalyst among the transition metal stearates for the early stage of the thermal oxidation of polypropylene, the effect of anions in copper compounds on the thermal oxidation of atactic polypropylene was examined. The oxygen uptake curves of the polymer in the presence of various copper compounds (acetate, propionate, butylate, stearate, laurate, polyacrylate, and cupric oxide) are shown in Figure 4. In the absence of the copper compounds, oxygen uptake of the polymer increases linearly with time. In the presence of copper compounds of fatty acids (acetate, propionate, butyrate, laurate, and stearate), the oxygen uptake of the polymer levels off at ca. 25-30 O2 mL/g polymer after... 

Copper Organo-copper compounds Acetates Coppen(II) acetate hydroxide hydrate (Compound A)... 

Copper Organo-copper compounds Acetates Ammonium copper acetate acetic acid... 

Similarly, hydantoins can be arylated at N-3. For example, treatment of 5,5-diphenyIhydantoin (4), R = R = Cg (phenytoin), with -tolyUead triacetate in the presence of sodium hydride and a catalytic amount of copper(II) acetate (37) gives compound (7). 

Cupri-. cupric, copper(II). -azetst, n. cupric acetate, copper(II) acetate, -carbonat, n. cupric carbonate, copper(II) carbonate, -chlorid, n. cupric chloride, copper(II) chloride. -hydroxyd, n. cupric hydroxide, cop-per(II) hydroxide. -ion, n. cupric ion, copper(II) ion. -ozalat, n. cupric oxalate, copper(II) oxalate, -oxyd, n. cupric oxide, copper(II) oxide. -salz, n. cupric salt, copper(II) salt, -suifat, n. cupric sulfate. copper(II) sulfate, -sulfid, n. cupric sulfide, copper(II) sulfide, -verbihdung, /. cupric compound, copper(II) compound, -wein-saure, /. cupritartaric acid. 

For the Cu(OTf)2-promoted reaction between ethyl diazoacetate and cinnam-aldehyde dimethyl acetal, products 143-145 account for only 35% the total yield. C/C and C/H insertion products 151 and 152 are obtained additionally in 49 and 14% yield, respectively154). It was assumed that the copper compound acts through Lewis-acid catalysis here, just as it is believed to do when orthoesters are used as substrates 160). According to this, catalyst-induced formation of a methoxy-... 

Metal ions play an important role in several of these oxidative reactions as well as in biological dioxygen metabolism. As an example, copper(II) acetate and hydrogen peroxide have been used to produce a stable oxidizing agent, hydroperoxy copper(II) compound. The same oxidation system is also obtained from copper(II) nitrate and hydrogen peroxide (Eq. 1) [103] but requires the neutralization of ensuing nitric acid by potassium bicarbonate to maintain a pH 5. 

Copper compounds are used routinely and widely to control freshwater snails that serve as intermediate vectors of schistosomiasis and other diseases that afflict humans (Hasler 1949 NAS 1977 Rowe and Prince 1983 Winger etal. 1984 Al-Sabri etal. 1993). These compounds include copper sulfate, copper pentachlorophenate, copper carbonate, copper-tartaric acid, Paris green (copper arsenite-acetate), copper oxide, copper chloride, copper acetyl acetonate, copper dimethyl dithiocar-bamate, copper ricinoleate, and copper rosinate (Cheng 1979). Also, many species of oyster enemies are controlled by copper sulfate dips. All tested species of marine gastropods, tunicates, echinoderms, and crabs that had been dipped for 5 seconds in a saturated solution of copper sulfate died if held in air for as little as a few seconds to 8 h mussels, however, were resistant (MacKenzie 1961). 

Arylations of amines and nitrogen-containing heterocycles require the presence of a copper catalyst, usually 10% copper(ll) acetate. For example, the reaction of 4-MeC6H4Pb(OAc)3 with the benzimidazole 20 affords the arylation product 21 in 98% yield.39 40 Similarly, the arylation of the amino groups of heteroaromatic compounds 22 and 23 gives rise to the corresponding products 24a and 25 in good to excellent yields (Equations (7)-(9)).41 42... 

The unusual copper nitrate-acetic anhydride reagent reacted with acetyl-acetone itself to form bis-(3-nitro-2,4-pentanediono) copper(II) (V), the same compound prepared by Nyholm (18). A novel elaboration of this reaction was treatment of hydrated chromium (III) nitrate with acetylacetone in acetic anhydride to yield a mixture of mono- and dinitrochromiumacetylacetonate (XI and XII). 

Copper Compounds Bis(acetonitrile)chloronitropalla-dium(II)-Copper(II) chloride, 33 t-Butyllithium-Copper(I) bromide-Di-methyl sulfide, 58 Copper(II) acetate-Bis(2-amino-phenyl) disulfide, 156 Copper(II) acetate-2,2 -Dipyridyl disulfide, 156... 

Copper Compounds for Smoke Production. DeMent (Ref) proposed to use several copper-ion contg mixts as smoke-producing pyrotechnic compns. These mixts are listed under Copper Chloride in this section on Chlorides and under Copper - 64 and Copper - 67, Copper Acetate, Copper Oxide Copper Stearate in this section on COPPER AND ITS SALTS... 

In the second manufacturing process for copper phthalocyanine, phthalonitrile, copper(II) acetate and ammonium acetate are heated in the presence of a base, with or without a solvent such as pyridine. The mechanism of this has been less studied than that of the phthalic anhydride/urea reaction. It is, however, significant that metal-free phthalocyanine is manufactured by heating phthalonitrile with the sodium derivative of a high-boiling alcohol in an excess of the alcohol. This reaction is believed148 to occur by the route outlined in Scheme 7, which is supported by the isolation of compounds of types (223) and (224). If this or a related mechanism operates in the... 

A polymeric ja-hydroperoxocopper(II) compound has been prepared from the reaction of hydrogen peroxide with an aqueous solution of copper(II) acetate and has been characterized by spectrophotometric methods and peroxide oxygen determination (equation 257).222 Such copper(II) peroxide compounds have recently been claimed to be active catalysts for the epoxida-tion of light alkenes by dioxygen.223... 

Like zinc, copper and its compounds have been used since ancient times, with copper dust, acetate, sulfate and carbonate reported in Egyptian and Hindu prescriptions, and also used by Hippocrates and Galen. Copper arsenite was used in 1892 for anemia and debility. Copper sulfate was recommended to strengthen man, to stimulate the heart and blood vessels, to increase deposition of fat and to treat anemia. The adult requirement is 1.25 mg Cud-1, about one third of which is absorbed. TPN should be supplemented with 0.5—1.5 mg d-1 (adults) and 20 gg (kg weight)-1 d-1 (children). 

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