Cyanides organo

Safety procedures must be observed in the laboratory at all times. Many chemicals encountered in analysis are poisonous and must be carefully handled. Whereas the dangerous properties of concentrated acids and of widely recognised poisons such as potassium cyanide are well known, the dangers associated with organo-chlorine solvents, benzene and many other chemicals are less apparent. 

In this section, the corrinoids, the other macrocyclic complexes, and the cyanides are dealt with separately (Sections A-C). The preparative organo-metallic chemist will be primarily interested in Sections B and C, whereas... 

Kwiatek and Seyler were the first to report that many organopenta-cyanides, when treated first with acid and then with alkali, liberate nitriles 110). This reaction occurs with unsubstituted primary and secondary alkyl, benzyl, vinyl, and phenyl complexes, while allyl, 2-oxo-, 2-hydroxy-, and 2-alkoxy complexes simply release the organo-ligand on treatment with acid, and 1-cyanoalkyl and a-pyridyl complexes are stable 105) (see also Table IV). The yield of nitrile is usually far from quantitative and is... 

Carbon tetrachloride-organo-phosphine, chlorides from alcohols with, 54, 63 CARBONYL CYANIDE, 51, 70 Carbonyl cyanide, with alcohols, 51, 72... 

Oxidizing agents have been shown to be extremely effective for removing many complex organics from wastewater, including phenols, cyanide, selected pesticides such as ureas and uracils, COD, and organo-metallic complexes [11]. Many oxidants can be used in wastewater treatment. Table 9 shows the oxidation potentials for common oxidants [24]. The most widely used oxidants in the... 

Versuche, aus 3-Brom-5-organo-l,2,4-oxadiazolen mit Kaliumcyanid 3-Cyan-l,2,4-oxadiazole zu erhalten, verliefen erfolglos142 321- Diese erhalt man aber aus 3-Diazoniono-l,2,4-oxadi-azolen mit Tetrabutylammonium-cyanid in Dimethylformamid32. ... 

B-Cyano-, B-isocyanato- and B-isothiocyanato-borazines are preferably prepared by reacting the B-chloroborazines with silver cyanide 128>, cyanate, or thiocyanate 22,72,120). Also, B-azidoborazines have been obtained recently. The isolation of [HNBN]3 has been claimed in a patent 130>. This work could not be reproduced due to the explosiveness of the compound 27 123>. However, several N-organosubstituted-B-azido-borazines have been made by reaction of symmetrical and unsymmetrical B-chloroborazines with NaN3 in acetonitrile 22,123). N-Organo-B-azido-borazines can be distilled in high vacuum if suitable precautions are taken 22>. 

Organo tellurium halides treated with potassium or silver cyanide were converted to organyl tellurium cyanides (p. 366). 

From Organo Tellurium Halides and Metal Cyanides... 

Exchange of halide for cyanide in organo tellurium halides occurs easily when the tellurium halide is fused with anhydrous silver cyanide4 or treated with potassium cyanide in methanol5, DMSO6 or ethanol/dimethyl sulfoxide7. 

The reactions of organo tellurium cyanides are largely unexplored. Benzyl tellurium cyanides reacted with the stoichiometrically required amounts of bromine to yield benzyl tellurium tribromides4,5. An excess of bromine caused deposition of tellurium and the formation of benzyl bromide5. 

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