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Diazo-reaction

Cuprous cyanide solution. The most satisfactory method is to dissolve the cuprous cyanide (1 mol) in a solution of technical sodium cyanide (2 5-2-6 mols in 600 ml. of water). If it is desired to avoid the preparation of solid cuprous cyanide, the following procedure may be adopted. Cuprous chloride, prepared from 125 g. of copper sulphate crystals as described under 1 above, is suspended in 200 ml. of water contained in a 1-litre round-bottomed flask, which is fitted with a mechanical stirrer. A solution of 65 g. of technical sodium cyanide (96-98 per cent.) in 100 ml. of water is added and the mixture is stirred. The cuprous chloride passes into solution with considerable evolution of heat. As the cuprous cyanide is usually emplo3 ed in some modification of the diazo reaction, it is usual to cool the resulting solution in ice. [Pg.192]

An interesting application of the diazo reaction is to the preparation of the otherwise difficultly accessible o- and />-dinitrobenzenes o- or p-rutrophenyl-diazonium fluoborates react with sodium nitrite in the presence of copper powder to yield o- or p-dinitrobenzene ... [Pg.595]

Phenol may be nitrated with dilute nitric acid to 3deld a mixture of o- and nitrophenols the 3deld of p-nitrophenol is increased if a mixture of sodium nitiute and dilute sulphuric acid is employed. Upon steam distilling the mixture, the ortho isomer passes over in a substantially pure form the para isomer remains in the distillation flask, and can be readily isolated by extraction with hot 2 per cent, hydrochloric acid. The preparation of m-nitrophenol from wt-nitroaniline by means of the diazo reaction is described in Section IV,70. [Pg.665]

From amines by the diazo reaction (see discussion preceding Section IV,59 p-tolumtrile and benzonitrile from p toluidine and aniline respectively, Section IV,66). [Pg.803]

One method of preparing sulphlnic acids has already been described (diazo reaction. Section IV,65). Reduction of a sulphonyl chloride with zinc powder and water affords the zinc salt of the sulphinic acid, converted by sodium carbonate to the sodium salt (in which form it is conveniently isolated), and by hydrochloric acid into the somewhat unstable sulphinic acid, for example ... [Pg.821]

Bromoresorcinol has been prepared by the monobromination of resorcinol monobenzoate and subsequent hydrolysis, from 2-bromo-5-aminophenol by the diazo reaction, by treating resorcinol with dichlorourea and potassium bromide, and by the bromination of 2,4-dihydroxy benzoic acid followed by decarboxylation. The above procedure is based particularly upon the observations of Rice. ... [Pg.24]

It is assumed that these alkaloids are formed by junetion at C that is, in the par -position to the hydroxyl group in ring I, beeause (1) the diazo-reaction in the two bimoleeular alkaloids is much less intense than with sinomenine, and (2) neither of the monobromosinomenines, in which the bromine atom is assumed to be at C, can be oxidised to a bimolecular... [Pg.272]

Rosenmund (Pd-BaSCh), 21, 84, 110 Reformatsky reaction, 21, 51 Reimer-Tiemann reaction, 22, 63 Replacement, amino group by a bromine atom (diazo reaction), 24, 22 amino group by hydroxyl group (diazo reaction), 23, 11... [Pg.59]

Formal 1,3-dipolar addition of a diazoalkane to an unsaturated metal fragment ML would produce 53. Such a species would be expected to be unstable with respect to nitrogen extrusion, and would seem a plausible intermediate in the diazo reaction ... [Pg.158]

Polymerizations, esterifications and other condensation reactions, diazo reactions, oxidation and reduction... [Pg.189]

L12. Lucassen, J., The diazo reaction of bilirubin and bilirubin diglucuronide. Ph.D. Thesis, 76 pp. TJniv. of Utrecht, 1961. [Pg.285]

N4. Nosslin, B., The direct diazo reaction of bile pigments in serum. Experimental and clinical studies. Scand. J. Clin. Lab. Invest., Suppl. 49, 1-176 (1960). [Pg.286]

Tl. Talafant, E., Properties and composition of the bile pigment giving a direct diazo reaction. Nature (London) 178, 312 (1956). [Pg.287]

Bart Reaction Borsche (Cinnoline) Synthesis Demianov Rearranement Diazo Reaction Gattermann Reaction Gattermann Method Pschorr Arvlation Sandmever Reaction Schiemann Reaction (Bak-Schiemann JRxn) Tiffeneau-Demianov Reaction fVidman-Stoermer ([Pg.847]

Broiiiofonu is made by reaction of acetone or eLhyl alcohol with sodium hypobromite carbon tetrabromide by reaction of CS2 plus bromine Br2 in the presence of iron, heated or by one reaction of bromoform with aqueous hypobromite solutions. Use is made of the diazo-reaction to introduce bromine into aryl compounds. [Pg.259]


See other pages where Diazo-reaction is mentioned: [Pg.655]    [Pg.771]    [Pg.771]    [Pg.272]    [Pg.354]    [Pg.16]    [Pg.106]    [Pg.157]    [Pg.185]    [Pg.1]    [Pg.47]    [Pg.165]    [Pg.27]    [Pg.32]    [Pg.132]    [Pg.99]    [Pg.436]    [Pg.261]   
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See also in sourсe #XX -- [ Pg.847 ]

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See also in sourсe #XX -- [ Pg.99 , Pg.217 , Pg.219 , Pg.222 ]

See also in sourсe #XX -- [ Pg.449 ]

See also in sourсe #XX -- [ Pg.114 , Pg.302 , Pg.332 ]

See also in sourсe #XX -- [ Pg.116 , Pg.117 , Pg.118 , Pg.122 ]

See also in sourсe #XX -- [ Pg.847 ]

See also in sourсe #XX -- [ Pg.114 , Pg.302 , Pg.332 ]

See also in sourсe #XX -- [ Pg.125 ]




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1,2,3-Triazoles, Regitz diazo reactions

1.2- Dicarbonyl compounds diazo-coupling reactions

3- Diazo-2-oxindoles, reactions

Acid-Base and Isomerization Reactions of Diazo Compounds in Water

Acids, reactions of aliphatic diazo

Acids, reactions of aliphatic diazo compounds with

Alcohols reaction with diazo compounds

Aldehydes reaction with diazo esters

Aliphatic diazo compounds, reactions with

Aliphatic diazo compounds, reactions with acids

Amines reaction with diazo compounds

Amines, diazo transfer reaction, synthesis

Asymmetric reactions diazo compounds

Boranes reaction with diazo compounds

Carboxylic acids a-diazo, reaction with ketones

Cyclopentadienes, diazo reactions

Deformylation diazo group transfer reaction

Deformylative diazo transfer reaction

Diazo 1,3-dipolar cycloaddition reaction

Diazo alkanes 3 + 2] cycloaddition reactions

Diazo alkanes reaction

Diazo carbenoid reactions

Diazo compounds carbene reactions

Diazo compounds catalytic asymmetric reactions

Diazo compounds cycloaddition reactions

Diazo compounds metal ion-catalyzed reactions

Diazo compounds reactions with ketones

Diazo compounds triplet carbene reactions

Diazo compounds, Bamford-Stevens reaction

Diazo compounds, alkylation reaction

Diazo compounds, electrophilic carbene complex reactions

Diazo compounds, preparation reactions

Diazo compounds, reactions with metal

Diazo compounds, reactions with metal carbonyls

Diazo decomposition reaction

Diazo derivatives, reactions

Diazo esters reaction

Diazo insertion reactions

Diazo insertion reactions rhodium-catalyzed

Diazo ketones reaction

Diazo reaction with boranes

Diazo reaction with carbonyl compounds

Diazo reaction with carboxylic acids

Diazo reactions with

Diazo reactions with nickel

Diazo reactions, Table

Diazo transfer reaction

Diazo transfer reaction sulfonyl azides

Diazo transfer reaction triflyl azide

Diazo-4,5-dicyano-2H-imidazole and Its Reaction Products

Diazo-coupling reactions

Diazo-transfer reactions carbene complexes

Diazo-transfer reactions reagents

Diazotization, of o-amino- -nitrobiphenyl Diazo transfer” reaction

Diphenyldiacetylene, reaction with diazo

Diphenyldiacetylene, reaction with diazo compounds

Esters, a-diazo C—H insertion reactions

Forster reaction diazo compounds

Hydrogenation, Regitz diazo reactions

Imidazoles, diazo-, reactions

Ketones Regitz diazo reactions

Ketones diazo, reaction with rhodium

Ketones, a-diazo Mannich reactions

Ketones, diazo C—H insertion reactions

Manganese diazo compounds, reactions with

Methanesulfonyl azide diazo transfer reaction

Methylene compounds, Regitz diazo reactions

Nitrogen diazo compound reaction

Phosphazines diazo-coupling reactions

Propene, 3-diazo cycloaddition reactions

Propene, 3-diazo cycloaddition reactions alkynyl carbene complexes

Reaction Replacement of a Diazo-Group by Iodine

Reaction diazo compounds

Reaction of Diazo

Reaction with Diazo Compounds Synthesis of 1-Imino-Pyrrole Derivatives

Reaction with diazo alkanes

Reaction with diazo compound

Reaction with diazo ketones

Reactions involving replacement of the diazo group

Reactions of Azo-, Diazo-, and Related Compounds

Reactions of Glutaminase with 6-Diazo-5-oxonorleucine

Reactions of a-Diazo Ketones

Reactions of diazo compounds

Reactions of diazo esters

Reactions of diazo ketones

Replacement, aldehyde group by hydroxyl diazo reaction)

Rh and Pd-catalysed Reactions of Diazo Compounds via Electrophilic Carbene Complexes

Rhodium acetate, reaction with diazo

Rhodium acetate, reaction with diazo carbonyl

Rhodium-catalysed reactions diazo compounds

The Diazo Transfer Reaction

Toluenesulfonyl azide diazo transfer reaction

Tosyl azide, Regitz diazo reactions

Transition Metal-Catalyzed Reactions of Diazo Compounds

Triazole, Regitz diazo reactions

Undesirable side reactions of diazo compounds

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