Arsenic synthesis

The synthesis can be carried out with most aromatic amines and is usually termed the Skraup reaction. The nitrobenzene is frequently replaced by arsenic acid, as in the prep)aration of 8-nitroquinoline from o-nitroanUine ... 

Early catalysts for acrolein synthesis were based on cuprous oxide and other heavy metal oxides deposited on inert siHca or alumina supports (39). Later, catalysts more selective for the oxidation of propylene to acrolein and acrolein to acryHc acid were prepared from bismuth, cobalt, kon, nickel, tin salts, and molybdic, molybdic phosphoric, and molybdic siHcic acids. Preferred second-stage catalysts generally are complex oxides containing molybdenum and vanadium. Other components, such as tungsten, copper, tellurium, and arsenic oxides, have been incorporated to increase low temperature activity and productivity (39,45,46). 

P. E. Eaton, in S. Iyer, ed.. Proceedings of the Ninth Annual Working Group Institute on the Synthesis of High Energy Density Materials, U.S. Army, ARDEC, Picatinny Arsenal, N.J., June 90. 

HTS catalyst consists mainly of magnetite crystals stabilized using chromium oxide. Phosphoms, arsenic, and sulfur are poisons to the catalyst. Low reformer steam to carbon ratios give rise to conditions favoring the formation of iron carbides which catalyze the synthesis of hydrocarbons by the Fisher-Tropsch reaction. Modified iron and iron-free HTS catalysts have been developed to avoid these problems (49,50) and allow operation at steam to carbon ratios as low as 2.7. Kinetic and equiUbrium data for the water gas shift reaction are available in reference 51. 

Stibonium Ylids and Related Compounds. In contrast to phosphoms and arsenic, only a few antimony yhds have been prepared. Until quite recendy triphenyl stibonium tetraphenylcyclopentadienyUde [15081 -36-4] C H Sb, was the only antimony yUd that had been isolated and adequately characteri2ed (192). A new method, uti1i2ing an organic copper compound as a catalyst, has resulted ia the synthesis of a number of new antimony yhds (193) ... 

Arsenanes, 1, 550 Arsenic heterocycles, 1, 539-561 Arsenin, 1-chlofo-1,4-dihydro-reactions, 1, 558 Arsenin, 1,2-dihydro-reactions, 1, 554 synthesis, 1, 557 Arsenin, 1,4-dihydro-... 

Latin American Crop Protection Association (LACPA), 259 Latvian histihite of Organic Synthesis (OIS), 262 Latvian Ministry of Eiivironmental Protection and Regional Development, 283 Laurel Industries Inc., 236, 241 Laxnii Organic hidustries Ltd., 173 Lead - metallic and inorganic compomids, 82 Lead acetate, 82 Lead arsenate, 82 Lead chloride, 82... 

Synthesis of Enamines Utilizing Various Compounds of Phosphorus Titanium, Boron, Arsenic, and Mercury. ... 

Unsolvated organomagnesium compounds have been recommended for the synthesis of organometallic derivatives of mercury, boron, aluminum, silicon, germanium, tin, phosphorus, arsenic, and antimony6-8 and have been used in procedures for the alkylation of aromatic rings and for the production of various polymerization catalysts.4 9... 

Arrhenius, Svante, 86,353 Arsenic, 573-574 Asparagine, 622t Aspartic acid, 622t Aspirin. See Acetylsalicylic acid Astaxanthin, 157 Asymmetric synthesis, 601 Atherosclerosis, 604... 

The striking constitution of brevetoxin B, unprecedented at the time of its discovery in 1981, presents a formidable challenge to organic synthesis. The unique and fascinating molecular architecture of brevetoxin B (1), its association with the red tide catastrophes, its potent biological activity, and the prospects for expanding the arsenal of synthetic methods all contributed in roughly equal measure to our decision to pursue a total synthesis of 1. This chapter addresses the efforts that culminated in the total synthesis of brevetoxin B (1 ).6... 

The first alkali metal-niobium-arsenic compounds were synthesized by accident while attempting the synthesis of alkali-metal main-group arsenides at relatively high temperature. It turns out that niobium and tantalum containers react readily... 

Arsenous Acid Oxidation Investigated in Micro Reactors Organic synthesis 92 [OS 92] Oxidation of arsenous acid by iodate... 

Arsenic trichloride 7784-34-1 Organic synthesis Pharmaceuticals Insecticides Ceramics... 

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