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Diazonium reactions

Pyridine-2- and -4-diazonium ions are far less stable than benzenediazonium ions. Azolediazonium salts generally show intermediate stability provided diazotization is carried out in concentrated acid, many of the usual diazonium reactions succeed. Indeed, azolediazonium salts are often very reactive in coupling reactions. [Pg.96]

Triazolo[4,3-a]pyridine, 3-amino-diazonium reactions, 5, 863 Dimroth rearrangement, 5, 861 Sandmeyer reaction, 5, 862 synthesis, 5, 883... [Pg.913]

One of the best methods for the introduction of iodine into aromatic rings is the reaction of diazonium salts with iodide ions. Analogous reactions with chloride, bromide, and fluoride ions give poorer results, and 14-25 and 13-20 are preferred for the preparation of aryl chlorides, bromides, and fluorides. However, when other diazonium reactions are carried out in the presence of these ions, halides are usually side products. Aniline has also been converted to fluorobenzene by treatment with t-BuONO and Sip4 followed by heating. A related reaction between PhN=N—N C4Hg and iodine gave iodobenzene. ... [Pg.875]

Azides. Explosive aryl azides may be formed inadvertently during the Sand-meyer and other diazonium reactions. [Pg.37]

Asymmetrical triarylstibines had been prepared (1,9, 60) by Campbell from the reaction of phenylmagnesium halides with diarylchlorostibines RR SbCl, which were obtained by the diazonium reaction. However, the alkyl-substituted analogs were not identified. [Pg.198]

Nitration of l,3-dihydrobenzo[c]thiophene 2,2-dioxide with fuming nitric acid is reported 9 to give a good yield of the 5-nitro derivative (87), which may be reduced to the corresponding amine. This amine reacts normally with acetic anhydride, but attempted diazonium reactions have not led to any useful products.9... [Pg.364]

More complex groups can be attached to the carbon surface via secondary reactions with groups already attached through dia-zonium chemistry. Polymers can be bonded to the pigment surface either via a direct diazonium reaction or by a secondary reaction. The attached polymers can give improved durability to printed inks. [Pg.116]

As with the [1,5-a] analog mentioned above, 3-amino-[l,2,4]triazolo[4,3-n]pyridine underwent typical diazonium reactions. It could be acylated and transformed into Schiff bases. The 3-amino group had little influence as an electron-donating group for stimulating electrophilic substitution of the fused triazole nucleus (66JOC265). [Pg.863]

The 3-amino derivative (126) could not be eiasily synthesized by the customary method of reacting 1-hydrazinoisoquinoline with cyanogen bromide but reaction of (127) with ammonium acetate in a sealed tube did form (126) as did ring closure of 1-hydrazinoisoquinoline with S-methylisothiourea (71CB3947). It was possible to perform the standard diazonium reactions with (126) (70UC894). [Pg.865]

Figure 8.16 Schematic representation of the fabrication of anthracene-functionalized GO through aiyl diazonium reaction. Reprinted from reference [112] by permission of The Royal Society of Chemistry. Figure 8.16 Schematic representation of the fabrication of anthracene-functionalized GO through aiyl diazonium reaction. Reprinted from reference [112] by permission of The Royal Society of Chemistry.
PRACTICE PROBLEM 20.10 In the preceding examples of diazonium reactions, we have illustrated syntheses... [Pg.922]


See other pages where Diazonium reactions is mentioned: [Pg.777]    [Pg.14]    [Pg.74]    [Pg.470]    [Pg.373]    [Pg.38]    [Pg.878]    [Pg.878]    [Pg.40]    [Pg.266]    [Pg.373]    [Pg.16]    [Pg.30]    [Pg.450]    [Pg.476]    [Pg.255]    [Pg.528]    [Pg.367]   
See also in sourсe #XX -- [ Pg.289 ]




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1, 2, 4, Thiadiazole diazonium salts coupling reactions

1- Naphthol, reaction with diazonium salts

Active hydrogen diazonium reaction

Active methylene compounds reaction with diazonium

Alkenes reaction with aryl diazonium salts

Amino Group to a Diazonium Ion The Sandmeyer Reaction

Aromatic diazonium salts, reaction with

Arsenic trichloride, reaction with diazonium

Aryl diazonium salts coupling reactions

Aryl diazonium salts substitution reactions

Aryl diazonium salts, Balz-Schiemann reaction

Aryl diazonium salts, Gomberg coupling reaction

Azo Coupling Reactions of Aliphatic Diazonium Ions and Related Processes

Balz-Schiemann reaction diazonium tetrafluoroborates

Benzene diazonium ions, reaction

Carbocations as intermediates in reactions of alkyl diazonium

Chloride, cupric reaction with aryl diazonium salts

Copper salts reactions with aryl diazonium

Copper salts reactions with aryl diazonium ions

Coupling reactions of aryl diazonium salts

Coupling reactions of diazonium salts

Cuprous chloride reaction with aryl diazonium salts

Cyanide reaction with diazonium compounds

Cyanide, cuprous reaction with aryl diazonium salts

Diazonium chlorides, reaction with ethyl

Diazonium compounds reactions

Diazonium compounds, reaction with

Diazonium compounds, reaction with Subject

Diazonium coupling reaction

Diazonium groups reactions

Diazonium ions nucleophilic substitution reactions

Diazonium ions reaction

Diazonium ions reaction with thiolates

Diazonium ions, aromatic substitution reactions

Diazonium polymerization reaction

Diazonium reaction with tyrosine

Diazonium salts Baltz-Schiemann reaction

Diazonium salts Diels-Alder reactions

Diazonium salts Sandmeyer reaction

Diazonium salts aryl, reaction with CuCN

Diazonium salts aryl, reaction with aromatic compounds

Diazonium salts aryl, reaction with cuprous halides

Diazonium salts aryl, reaction with iodide

Diazonium salts aryl, reaction with water

Diazonium salts coupling reactions

Diazonium salts reaction with active methylene compounds

Diazonium salts reaction with arenes

Diazonium salts reaction with cuprous halides

Diazonium salts reactions

Diazonium salts reactions with hydride

Diazonium salts substitution reactions

Diazonium salts, amine reactions

Diazonium salts, amine reactions coupling

Diazonium salts, amine reactions preparation

Diazonium salts, amine reactions reduction

Diazonium salts, aryl reaction

Diazonium salts, from arylamines, reactions

Diazonium salts, reaction with indoles

Diazonium salts, reaction with substituted nitriles yields

Diazonium salts, reactions with sulphur

Diazonium salts, reactions with sulphur dioxide

Diazonium side reactions

Diazonium, reaction with

Diazonium, reaction with active methylene

Diazonium, reaction with aminopyridine

Diazonium, reaction with hydrazones

Diazonium-compounds, general preparation reactions

Electrophilic aromatic substitution reaction diazonium coupling

Enamines reactions with diazonium salts

Ethanol, diazonium salt reaction

Grignard reagents reaction with diazonium salts

Hapten-carrier conjugation diazonium reactions

Heck reaction diazonium salts

Heck reaction with aryl diazonium salts

Heterocyclic reaction with diazonium

Iodide, potassium reaction with aryl diazonium salts

Methanol, diazonium salt reaction

Nitrite, sodium reaction with aryl diazonium salts

Nucleophiles reaction with diazonium

Nucleophilic aromatic substitution reactions diazonium ions

Other Reactions Involving Formation of Aromatic Diazonium Ions

Phenolic compounds reaction with diazonium

Phenols reaction with aryl diazonium ions

Phenols reactions, with diazonium salts

Potassium iodide, diazonium salt reaction

Primary amines, derivatives diazonium salt reaction

Pyridine-2 diazonium ions, reactions

Pyridyl diazonium salts, reactions with

Radical reactions of diazonium ions

Reaction CLVI.—Action of Hydrogen Sulphide on Diazonium Compounds

Reaction LXI.—Reduction of Diazonium Compounds to the corresponding Hydrocarbon

Reaction LXXII.—Replacement of the Diazonium Group by Hydroxyl

Reaction XLIX.—(a) Action of Cuprous Potassium Cyanide on Aromatic Diazonium Compounds (Sandmeyer)

Reaction of aromatic diazonium salts with metal and metalloid halides or oxides in aqueous solution

Reaction of diazonium salts with nitrite anion

Reaction with aryl diazonium salts

Reaction with diazonium salts

Reaction with, alkylating agents diazonium salts

Reactions of Aryl Diazonium Salts

Reactions of Diazonium Compounds

Reactions of Diazonium Salts

Reactions with Diazonium Salts, Organic Halides, and Carboxylic Acids

Substitution reactions by diazonium ions

Substitution reactions of aryl diazonium salts

Thiolate ions reaction with diazonium

Water reaction with diazonium

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