Mercury ethylene derivative

From Acetylene. Although acetaldehyde has been produced commercially by the hydration of acetylene since 1916, this procedure has been almost completely replaced by the direct oxidation of ethylene. In the hydration process, high purity acetylene under a pressure of 103.4 kPa (15 psi) is passed into a vertical reactor containing a mercury catalyst dissolved in 18—25% sulfuric acid at 70—90°C (see Acetylene-DERIVED chemicals). 

Vinyl acetate (ethenyl acetate) is produced in the vapor-phase reaction at 180—200°C of acetylene and acetic acid over a cadmium, 2inc, or mercury acetate catalyst. However, the palladium-cataly2ed reaction of ethylene and acetic acid has displaced most of the commercial acetylene-based units (see Acetylene-DERIVED chemicals Vinyl polymers). Current production is dependent on the use of low cost by-product acetylene from ethylene plants or from low cost hydrocarbon feeds. 

Ethylene and 1,2-diphenylethylene dithioacetals derived from different ketones decompose upon irradiation (high-pressure mercury lamp) in the presence of oxygen to the parent ketones (see Scheme 21) the reported - yields were 57-90%. In an analogous case that may serve as... 

Mercury Derivatives.—The mode of preparation of these compounds is similar to that adopted for the preceding compounds. When mercuric chloride is used and the operations are carried out in methyl alcohol, a yellow powder results, which is soluble in methyl alcohol, glycerine, ethylene glycol, and acidified potassium iodide solution. It is decomposed by water or sodiunr hydroxide aird is only slightly soluble in dilute acids, but if treated with antimony compounds, antimonyl derivatives are obtained, which are more soluble and are stable in alkaline solutions. The decomposition by water is said to give rise to colloidal mercury and 3-amino-4-hydroxyplienylarsenoxide, OH.CgHa.(NH2).AsO. If an excess of mercuric chloride is used, the oxidation proceeds to o-aminophenol, mercurous chloride, and arsenious... 

Mercury Derivatives of Methylene Iodide.—Wanklyn and Yon Than showed that neither mercury nor zinc gave organic compounds when allowed to react with ethylene iodide. 

The effective dichloromethylating agent phenyl(trichloromethyl)mercury reacts slowly with 4,6-dienes of 3-ethylene ketals (but not the free ketone) and 3/ -acetates to give 6a,7a-dichloromethylene derivatives in fair yield, although in the latter case an equal amount of the 2, 3( -dichloromethylene A -compound is also formed ... 

Other types of organic mercury derivative are formed by addition of mercury salts to olefins 192 for example, when ethylene is passed into an aqueous mercuric acetate solution, a basic mercury salt adds to the C=C double bond ... 

This reaction is applied to a wide range of alkenes such as acrylic esters, styrene, ethylene, 1-alkene, 1,3-dienes, allyl chloride, allyl acetate, and vinyl ethers [122]. Tolerance of the arylmercury compounds to polar functional groups in the substrate renders the reaction applicable to the synthesis of many functionalized styrene derivatives. A ferrocenyl mercury compound undergoes addition to alkene via the Heck type reaction of methyl methacrylate (Eq. 5.29) [123]. 

The ethylene-sulfide-modified material gave a sulfur-containing derivative that had excellent capture kinetics for removing mercury, cadmium, and lead from... 

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