Mercury chloride, reaction

The monomer from which the vinyl plastic polyvinyl chloride (PVC) is prepared. Vinyl chloride was originally made by passing acetylene and hydrogen chloride over a mercury chloride catalyst at a temperature of about 180 °C. Now made from ethylene chloride which is converted to vinyl chloride by contact with a catalyst at about 500 °C (900 °F) or by reaction with dilute caustic alkali at about 150 °C (300 °F). 

Glycoamidines have been readily prepared by a mercury-promoted reaction of the corresponding thioamides with amines.69 TV-Boc protected amidines have been prepared from /V-(Boc) thioamides by treatment with base and mercury(II) chloride (Scheme 34).70... 

Reaction with mercury(II) chloride produces methyl mercury chloride ... 

Two metal halides have been found to react with olefins by what appears to be insertion reaction. Palladium chloride and mercury chloride both will add to olefins. The palladium alkyls canot be isolated, but they go on to products which can be accounted for by an initial addition. 

Again several alkyls add—molybdenum, chromium, iron, cobalt, nickel, the alkali metal alkyls and aluminum alkyls react. A tin alkoxide has recently been studied by Russian workers and found to add to acetylenes. Mercury chloride, of course, adds and two cobalt—cobalt bonded compounds add to acetylene. The second is questionable because it dissociates in solution and the reaction may be a radical reaction, one cobalt adding to each end of the triple bond. 

Three samples per patient, each with 200 pi blood, are mixed with double-distilled water prewarmed to 37°C for 10 min. To one of the tubes with the diluted hemoly-sate, add 1 ml mercury chloride/trichloracetic acid solution and 1 ml ALA solution for determination of the blank value. The enzyme reaction is performed in duplicate To each of the 200-pl hemolysate samples add 1 ml prewarmed ALA solution. All three tubes are mixed and incubated for 1 h at 37°C. To stop the reaction, 1 ml mer-... 

When the composition of MeCN in the reaction medium was increased, the resulting mixture showed decreasing analyte sensitivity, usually accompanied by broad tailing and split peaks. Acetonitrile significantly suppressed the derivatization reaction between /3-lactam and mercury chloride. Thus, it must be partially evaporated prior to derivatization (83), or the reaction time should be prolonged up to 180 min for the determination of OXA, CLO, and DICL (86). 

The mercury chloride sulfide 7-Hg3S2Cl2 is obtained by either quenching a mixture of mercury(II) sulfide vapor from 750°C. or by the reaction of a dilute alkaline solution of mercury(II) chloride with carbon disulfide. The conditions for the preparation of Hg3S2Cl2 are given in Table IV. 

Tellurium tetrachloride and tetrabromide react with equimolar quantities of aryl mercury chlorides to produce aryl tellurium trihalides in high yields. This reaction is useful when the trichlorotelluro group is required at a specific position in the aromatic molecule or when tellurium tetrachloride does not condense in an acceptable manner with the aromatic hydrocarbon. The solvent of choice is dioxane, because mercury dichloride precipitates as the dioxane adduct, facilitating the isolation and purification of the aryl tellurium trichlorides. 

The reaction between aryl (phenyl, substituted phenyl, naphthyl) tellurium trichlorides and aryl mercury chlorides or acetates are best carried out with dioxane as the solvent. The mercury(II) salts precipitate as their dioxane adducts. The symmetrical or unsymmetrical... 

A convenient method for the preparation of unsymmetrical aryl organo tellurium dichlorides is the reaction of equimolar amounts of an aryl tellurium trichloride with an aromatic or aliphatic mercury chloride or acetate in refluxing dioxane. The yields vary... 

The principle methods of mercuriation involve reaction of an aromatic with either mercuric acetate (both in the presence and absence of a protic acid), mercuric chloride, or mercuric perchlorate [72MI2( 186)]. The for-... 

Procedure Transfer 100 mL of Standard Solution to a 300-mL mercury analysis reaction vessel, add 2 drops of a 1 20 potassium permanganate solution, and mix (the solution should be purple add additional permanganate solution, drop-wise, if necessary). Add 5 mL of 11 A nitric acid, stir, and allow to stand for not less than 15 s. Add 5 mL of 18 A sulfuric acid, stir, and allow to stand for not less than 45 s. Add 5 mL of a 3 200 hydroxylamine hydrochloride solution, stir, and allow to stand until the solution turns light yellow or colorless. Add 5 mL of a 1 10 stannous chloride solution, immediately insert the aerator connected to an air pump, and determine the maximum absorbance of the treated Standard Solution at the mercury resonance line of 253.65 nm, with a suitable atomic absorption spectrophotometer equipped with a mercury hollow-cathode lamp and an absorption cell that permits the flameless detection of mercury. 

It is most conveniently stored in glass ampuls. Several other preparations for this compound are known including reactions of dihydroxy(phenyl)borane and boron trichloride12 13 or phosphorus pentachloride,14 2,4,6-triphenylboroxin, [C6H5BO]3, with phosphorus pentachloride,14 phenyl mercury chloride with boron trichloride,15 and benzene with boron trichloride.16... 

Group reaction white precipitate of lead chloride PbCl2, mercury chloride Hg2Cl2, and silver chloride AgCl. 

The inorganic products of the ozonolysis reactions were determined for three different organomercurials. Ozonolysis of two dialykylmer-curials produced a mixture of mercuric chloride, mercurous chloride, and mercuric oxide (Reactions 3 and 14, Table I) while one alkylmercuric halide gave only mercuric and mercurous chlorides (Reaction 13, Table I). A known mixture of the three salts was tested for its stability to the reaction conditions. The salts were ozonized as a solution/mixture with methylene chloride. Powder x-ray diffraction showed no difference in the mercury salt mixture after a 2-hour ozonation at 10°C. 

The alkylmercuric halides, on the other hand, reacted slowly enough with ozone to permit kinetic studies. While attempts were made to monitor ozone uptake during the first part of the reactions, it was clear that the primary and secondary alkylmercuric halides formed many ozone-reactive intermediates soon after the introduction of 03/02. Hence, in the case of isopropylmercuric chloride (Reaction 10, Table II), isopropyl alcohol was formed and had begun to react appreciably with ozone well before the mercurial had half reacted. By comparison, the reaction of tert-butylmercuric chloride was considerably faster than the primary and secondary alkylmercuric halides (Table III). In this case an excellent 1 1 correlation with ozone was noted throughout the majority of the reaction. Only at the end of this reaction, when other organic products began to appear (NMR), did the reaction mixture demand more than one equivalent of ozone. 

Nitroselenenylation of alkenes141-149 is performed in a mixture of acetonitrile/tetrahydro-furan (compared to the nitromercuration reaction, this allows application to alkenes that may be insoluble in water) by the addition of phenylselenenyl halides, mercury(ii) chloride, and silver nitrite. Mercury chloride is necessary to significantly or completely suppress the formation of -hydroxy selenides due to the ambident character of the nitrite anion. 

The reaction is specific in that the allyl group retains its configuration in the course of transfer. Thus reactions of metallic mercury with an asymmetrically substituted 7r-allylpalladium chloride (for example, crotyl-palladium chloride) might equally afford both cis- and /raMr-2-butenyl-mercury chloride isomers, as well as the 1-butenyl compound. Hence generally three compounds could be expected in the reaction. However, it has been found 161) that essentially the reaction yields only trans-crotylmercury chloride (based on infrared spectra). In the case of 1-phenyl-77-allylpalladium chloride and l-acetyl-2-methyl-7r-allylpalladium chloride, again only the respective y-substituted /raw-allylmercury halides have been found. Since such conditions do not allow the allyl rearrangement 162), formation of the /ra r-allylmercury derivatives is evidence that the... 

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