Mercury acetate compounds

Hydantoin itself can be detected ia small concentrations ia the presence of other NH-containing compounds by paper chromatography followed by detection with a mercury acetate—diphenylcarba2one spray reagent. A variety of analytical reactions has been developed for 5,5-disubstituted hydantoias, due to their medicinal iaterest. These reactions are best exemplified by reference to the assays used for 5,5-diphenylhydantoiQ (73—78), most of which are based on their cycHc ureide stmcture. Identity tests iaclude the foUowiag (/) the Zwikker reaction, consisting of the formation of a colored complex on treatment with cobalt(II) salts ia the presence of an amine (2) formation of colored copper complexes and (3) precipitation on addition of silver(I) species, due to formation of iasoluble salts at N. ... 

Merkuro-. mercurous, mercury (I), -azetat, n. mercurous acetate. mercury(I) acetate, -chlorld, n. mercurous chloride, mercury(I) choride. -chrom, n. (Pharm.) mercuro chrome, -jodid, n. n ercurous iodide, mer-cury(I) iodide. -nitrat, n. mercurous nitrate, mercury(I) nitrste. -oxyd, n. mercurous oxide, mercury(I) oxide, -salz, n. mercurous salt, mercury (I) salt, -sulfat, n. mercurouasulfate, mercury(I) sulfate, -sulfid, n. mercurous sulfide, mercury(I) sulfide, -verbindung, /. mercurous compound, mercury (I) compound. 

Optically pure glyceraldehyde acetonides are widely used in the synthesis of enantiomerically pure compounds (EPC synthesis).1 2 3 4 5 Whereas D-(R)-glyceraldehyde acetonide is easily obtained from the inexpensive D-mannitol,6 7 there are only a limited number of practical syntheses of the enantiomeric L-(S)-glyceraldehyde acetonide.8 9 Difficulties arise from different sources 1) availability of the starting material diisopropylidene-L-mannitol 2) length of the synthesis 10 3) nature of the reactants used mercury acetate, mercaptans, lead tetraacetate, ozone at -78°C, 4) moderate yields.11 14... 

Among some metal oxygen compounds which add, palladium and thallium ion both oxidize olefins and apparently the initial step is the addition of a metal hydroxide across the olefin double bond. The intermediates have not been isolated because they go on to other products but kinetic and other evidence indicates that the addition of the hydroxide is the initial step. In the well known mercury acetate addition to olefins in alcohol solution one can isolate the /S-hydroxv or alkoxy ethylmercury derivatives. 

A functionalized mercury(II) compound like ethyl (acetoxymercurio)acetate (136) allows an easy approach to prostaglandin endoperoxide analogs (equation 52).204 Several organomercury(II) compounds, RHgCl (R = Me, aryl, benzylic), are able to add to 1,3-dienes in the presence of a stoichiometric amount of a palladium(II) salt and affonl ir-allylpalladium compounds of type (137) in variable yields (equation 53).20S A related intramolecular carbomercuration has been reported by Snider.206 It allows a stercospe-cific approach to the chloromercury compound (138 equation 54). Similar palladium-mediated reactions... 

First, to produce the mercury component, a pulverized mixture of 50 g of allylcarbamide and 50 g of succinic anhydride is heated for 30 minutes at 110°C. After cooling the fused mass is ground with 50 cc of cold water and the crystalline mass after quick filtering from the liquid is recrystallized from hot water. The white crystalline needles having a MP of 142° to 144°C are allyl-succinyl-carbamide. In order to produce a mercury compound thereof a mixture of 20 g of the allyl-succinyl-carbamide and 30 g of mercury acetate is... 

Recently, redistribution reactions between phenyllead compounds have been used to prepare triphenyllead chloride from tetraphenyllead and diphenyllead dichloride 202>, and, using mercury acetate in acetic acid as a catalyst, phenyllead triacetate from diphenyllead diacetate and lead tetraacetate, and diphenyllead diacetate from tetraphenyllead and lead tetraacetate 325>. The mercury acetate catalyst is notable in that it does not catalyze the redistribution of alkyllead compounds. 

Very little is known about white mercury(I) acetylide, which is formed as a monohydrate by passing ethyne into aqueous solutions of mercury(I) acetate, while white HgC2 was similarly obtained from HgI2/KI or K2[Hg(CN)4] solutions.213 This material decomposes at 100 °C and with dilute HC1, affords ethyne. The mercury(I) compound Hg2C2H20, from... 

To obtain this type of D-glucosamine donor in a stereocontrolled manner, another glycal derivative, namely 3-0-benzyl-2-deoxy-5,6-O-isopropyli-dene-D-araW o-l,4-anhydro-hex-l-enitol (151), was chosen as starting material because it is easily prepared from D-mannose and because the j8-face of the double bond is very hindered.79 As anticipated, azido-phenylselenyla-tion of 151 afforded an a//3 mixture of phenyl 2-azido-2-deoxy-l-seleno-D-glucofuranosides 152 in high yield. In order to obtain the glucosamine equivalent in pyranose form, compound 152 was treated under acidic conditions in the presence of mercury acetate to effect simultaneous cleavage of... 

Mercury to carbon bonds can be formed by the reaction of certain mercury(II) compounds, especially the acetate, trifluoroacetate, or nitrate, with olefinic or aromatic organic molecules. 

Condensation of, J,iV-acetals 77 with 1,3-dicatbonyl compounds in the presence of mercury acetate leads to thiophenes 80. Mercury complexes 78 derived from 77 react with 1,3-dicarbonyl compounds to generate intermediates 79, which undergo cyclization and subsequent hydrolysis-deacylation to afford 80 <1998JOC6086, 2000JOC3690, 2000JHC363>. Thiophenes 82 <20020L873, 2004JOC4867> are also prepared by reaction of 77 with 2-diazo-3-trimethylsilyloxy-3-butenoate 81 (Scheme 18). 

It reacts with hydrochloric or hydriodic acids, giving acetic acid, naphthalene, and a mercuric halide four atoms of iodine react giving acetic acid, mercuric iodide, and iodonaphthalene sodium amalgam on the alcoholic solution yields mercury, acetic acid, and naphthalene alcoholic hydrogen sulphide or ammonium sulphide at 100° C. break the compound down into acetic acid, mercuric sulphide, and naphthalene. 

Bromomercuri-2 4-diphenyl-selenophene is prepared by the methods outlined above or by heating the mercuri-bis compound for ten minutes with mercuric bromide in acetone solution. It crystallises from alcohol in microscopic, colourless, felted hairs, M.pt. 215° C, (corr.), soluble in benzene, toluene, or glacial acetic acid. When its toluene solution is boiled, it decomposes with formation of diphenyl-selenophene and mercurous bromide. 

In a study of six mercury compounds, mercury chloride, mercury nitrate, sodium ethylmercurithi-osalicylate, methyl mercury chloride, mercury acetate and phenylmercury acetate in MDCK cells, LLC-PKl cells and human primary proximal tubular cells (hPTC) and non-renal cell lines (SAOS and Hep G2) it was found that all mercury compounds were toxic to all cell types as evidenced by neutral red uptake, thymidine incorporation and the MTT assay [189]. However, sodium ethylmercurithiosalicylate, methyl mercury chloride and phenylmercury acetate were one order of magnitude more toxic than the other compounds. In addition the GSH synthesis inhibitor L-buthionine sulfoximine (BSO) potentiated the toxicity of all mercury compounds [189]. In a study using primary rabbit proximal tubular cells it was also shown that methyl mercury chloride is more toxic than mercury chloride [190]. Differences in the extent and rate of metal uptake were also evident. Maximum cellular uptake of Hg " occurred within 6-24 hr after exposure and was not concentration-dependent, whereas maximum uptake of CHgHg" occurred within 3 hr of exposure and was concentration- dependent [190]. 

Observe normal precautions appropriate to the circumstances and quantity of material handled. Phenylmercuric acetate may be irritant to the skin, eyes, and mucous membranes. Eye protection, gloves, and a respirator are recommended. Chronic exposure via any route can lead to central nervous system damage. In the UK, the occupational exposure limit for mercury-containing compounds, calculated as mercury, is 0.01 mg/m long-term (8-hour TWA) and 0.03 mg/m shortterm. ... 

Organic mercury compounds in this group have been known since 1913 (Schoeller et al., 1913). They are prepared by introducing ethylene gas into a slurry of mercury acetate in methanol ... 

The basic compound of this group is phenylmercury acetate (12), one of the earnest known organic mercury compounds. Many processes have been developed for its preparation. Phenylmercury derivatives can be obtained from benzene reacted with mercury acetate at about 100°C. The reaction temperature can be reduced with catalysts, for example boron trifluoride (Dimroth, 1926 Kobe and Lueth, 1942). 

MERCURY ACETATE (1600-27-7) Light and heat can cause decomposition. May react violently or form sensitive explosive compounds with 2-butyne-l,4-diol, fluoroacetylene, a-nitroguanidine, 5-nitrotetrazol. Incompatible with ammonia, hydrozoic acid, methyl isocyanoacetate, sodium acetylide, sodium peroxyborate, trinitrobenzoic acid, urea nitrate. 

Acetic acid, merouridi- Acetic acid, mercury(2+) salt A13-04458 Anthracene, 1,4-dihydro-, compd. with mercury diacetate (1 1) Bis(acetyloxy)mercury Caswell No, 543A CCRIS 7488 Diacetoxymercury EINECS 216-491-1 ERA Pesticide Chemical Code 052104 HSDB 1244 Mercuriacetate Mercuric acetate Mercuric diacetate Mercury acetate Mercury di(acetate) Mercury diacetate Mercury(2-f) acetate Mercury(ll) acetate Mercuryl acetate NSC 215199 UN1629, Catalyst for organic synthesis, pharmaceuticals. Used for mercuration of organic compounds. Crystals mp = 178-180 soluble in H2O (40 g/100 ml), EtOH LDso (rat orl) = 4 mg/kg, Atomargtc Chemetals Cerac Noah Chem. Thor. 

Diorganothallium compounds are known to undergo disproportionation and alkyl-exchange reactions, as shown in equations (20) and (21). Dialkyl- and diarylthallium carboxy-lates react with mercury acetate to give monoorganothallium dicarboxylates (equation 22). ... 

These compounds were prepared by treating the corresponding -2-thiones (I) or (II) with mercury acetate in a mixture of dichloromethane-acetic acid at refluxing temperature (see [12H14]). 4,5-Bis methylacetate)diseleno-1,3-dithiole-2-one is a white solid mp=18-20°C UV(CH3CN) 264 nm, and 4,5-(methylacetatediseleno)-1,3-dithi-ole-2 one is a white-yellow solid mp=97 °C UV(CH3CN) 307 nm. 

Mercury (metafile and its ammonium, chloride and acetate compounds), 5% petrolatum (reagents, chloremia titration) (Foussereau 1982 Kanerva et al. 1994 Thomas et al. 1997)... 

Vinyl acetate gives a well-defined reduction wave in methanolic solutions containing mercuric acetate. The wave is attributed to the reduction of a mercury addition compound. It was thus possible to determine vinyl acetate in the presence of acetic acid, acetaldehyde and crotonaldehyde. The same principle can be utilized for the determination of allyl alcohol, vinyl butyrate or styrene. 

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