Silver acetylides dioxide

Within the same green context, and in an effort to utilize carbon dioxide in organic chemistry, Anastas et al. devised a similar reaction in which the silver acetylide intermediate was trapped by carbon dioxide and the resulting carboxylate was trapped again with benzyl bromide derivatives. The thus-formed ester reacted... 

Molecules could be adsorbed on the silver nitrate surface to form an activated complex which then reacts with gaseous oxygen, and this would result in a reaction rate proportional to 1 — reaction rate. There are some indications, however, that neither process is the correct one. It was observed that the evolution of carbon dioxide is very abrupt within the experimental error no carbon dioxide whatever was produced until the silver nitrate-silver acetylide equilibrium had been attained. It is difficult to understand why some catalytic oxidation should not have occurred on either of the two surfaces before this condition was reached. 

When silver or copper acetylides are heated with 1-aminobenzimidazolium salts, pyrazoles form <84JGU1493>. Oxidation of 1-aminobenzimidazoles with manganese dioxide or lead tetraacetate can give either l,r-azobenzimidazoles (175) or 3-substituted benzo-l,2,4-triazines (176). Electrochemical measurements have shown that the first step in this reaction is removal of an electron from a t-orbital of benzimidazole rather than from the amino group. Because the cation radical which is formed must be stabilized by loss of a proton, for (176) to form the 2-substituent must contain an... 

SULFUROUS OXIDE (7446-09-5) SO, Noncombustible liquefied gas under pressure or liquid. Contact with air forms hydrogen chloride fumes. Violent reaction with water or steam, forming sulfurous acid, a medium-strong acid and corrosion hazard. Reacts violently with acetylene, acrolein, alcohols, aluminum powder alkali metals (i.e., potassium, sodium) amines, ammonia, bromine pentafluoride butadiene caustics, cesium acetylene carbide chlorates, chlorine trifluoride chromium powder copper or copper alloy powders chlorine, diethylzinc, fluorine, ethylene oxide lead dioxide lithium acetylene carbide diamino-, metal powders monolithium acetylide-ammonia nitryl chloride potassium acetylene carbide potassium acetylide, potassium chlorate rubidium carbide silver azide sodium acetylide staimous oxide. Decon oses in... 

BENSULFOID (7704-34-9) Combustible solid (flash point 405°F/207°C). Finely divided dry materia forms explosive mixture with air. The vapor reacts violently with lithium carbide. Reacts violently with many substances, including strong oxidizers, aluminum powders, boron, bromine pentafluoride, bromine trifluoride, calcium hypochlorite, carbides, cesium, chlorates, chlorine dioxide, chlorine trifluoride, chromic acid, chromyl chloride, dichlorine oxide, diethylzinc, fluorine, halogen compounds, hexalithium disilicide, lampblack, lead chlorite, lead dioxide, lithium, powdered nickel, nickel catalysis, red phosphorus, phosphorus trioxide, potassium, potassium chlorite, potassium iodate, potassium peroxoferrate, rubidium acetylide, ruthenium tetraoxide, sodium, sodium chlorite, sodium peroxide, tin, uranium, zinc, zinc(II) nitrate, hexahydrate. Forms heat-, friction-, impact-, and shock-sensitive explosive or pyrophoric mixtures with ammonia, ammonium nitrate, barium bromate, bromates, calcium carbide, charcoal, hydrocarbons, iodates, iodine pentafluoride, iodine penloxide, iron, lead chromate, mercurous oxide, mercury nitrate, mercury oxide, nitryl fluoride, nitrogen dioxide, inorganic perchlorates, potassium bromate, potassium nitride, potassium perchlorate, silver nitrate, sodium hydride, sulfur dichloride. Incompatible with barium carbide, calcium, calcium carbide, calcium phosphide, chromates, chromic acid, chromic... 

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