Diazonium compounds or diazonium salts are a group of organic compounds sharing a common functional group [R−N+≡N]X− where R can be any organic group...

coupling is an reaction between a diazonium compound (R−N≡N+) and another aromatic compound that produces an azo compound (R−N=N−R’). In this electrophilic...

diazo compound is diazomethane, CH2N2. Diazo compounds (R2C=N2) should not be confused with azo compounds (R−N=N−R) or with diazonium compounds (R−N+2)...

reaction is a chemical reaction used to synthesize aryl halides from aryl diazonium salts using copper salts as reagents or catalysts. It is an example of...

Aromatic azo compounds can be synthesized by azo coupling, which entails an electrophilic substitution reaction where an aryl diazonium cation is attacked...

fluoride. An alternative methodology produces the fluoride salt of the diazonium compound. In this implementation, the diazotization is conducted with a solution...

synthetically by converting p-aminobenzamide into the corresponding diazonium compound followed by coupling with 3-hydroxy-2-naphththoic acid (2-ethoxy)anilide...

achieved via a para-selective nitration, followed by conversion to a diazonium compound and a Sandmeyer reaction to insert the chlorine into the 2-position...

color. In a related sense, the process relies on two properties of diazonium compounds: they are deactivated by light, i.e. they degrade irreversibly to...

its salts undergo decarboxylation to benzene. The reaction of the diazonium compound derived from aniline with hypophosphorus acid gives benzene. Alkyne...

an aryl diazonium salt (ArN2X) to an electron-poor alkene usually supported by a metal salt. The reaction product is an alkylated arene compound. The reaction...

urobilinogen with para-dimethylaminobenzaldehyde, or interaction with a diazonium compound to produce a colored product. Test strips that use Ehrlich's reagent...

active methylene compounds with diazonium salts. Diazonium salts add to active methylene compounds to form an intermediate azo compound, followed by the...

nitriles are often prepared in the laboratory from the aniline via diazonium compounds. This is the Sandmeyer reaction. It requires transition metal cyanides...

fluoroboric acid), including H+·(H2O)n ("hydronium"), H+·(Et2O)n Diazonium compounds (ArN+ 2). Meerwein reagents such as OEt+ 3, the strongest commercial...

of pharmaceuticals, pesticides, and liquid crystals. The conversion of diazonium salts is a well established route to aryl fluorides. Thus, anilines are...

with aryl diazonium salts was studied first by Tour et al. Due to the harsh conditions needed for the in situ generated diazonium compound, other methods...

strongly colored, oxidized impurities. Aniline can be diazotized to give a diazonium salt, which can then undergo various nucleophilic substitution reactions...

can also be prepared using diazonium salts. When aniline is treated with NaNO2+dilute HCl at 5°C, it yields benzene diazonium chloride. When this is further...

acid catalyst iron(III) bromide. They may also be prepared from diazonium compounds. Bromobenzenes may be carboxylated into carboxylic acids using carbon...

an aryl-aryl coupling reaction via a diazonium salt. The arene compound (here benzene) is reacted with a diazonium salt in the presence of a base to provide...

reacts with nitrous acid to form diazonium salt, which can undergo coupling reaction to form an azo compound. As azo-compounds are highly coloured, they are...

are: Nitrosation Ketone halogenation Keto-enol tautomerism Aliphatic diazonium coupling Carbene insertion into C-H bonds Carbonyl alpha-substitution...

presence of mercury(II) salts. Hg(II) can be alkylated by treatment with diazonium salts in the presence of copper metal. In this way 2-chloromercuri-naphthalene...

include: Pigment Yellow 6 (CAS# 2512-29-0), derived from 2-nitrotoluene (diazonium precursor) and aniline (acetoacetanilide precursor) to produce medium...

1983, which failed soon after. Kalvar film consisted of a diazo compound, diazonium salt, suspended in a saran plastic film. When exposed to ultraviolet...

amine, the dye can be diazotized in the laboratory, and the resulting diazonium salt used as a trapping agent in enzyme histochemistry. The name fuchsine...

([H2C=N(−H)(−OH)]+Cl−). It is a reagent in organic synthesis for the conversion of aryl diazonium salts to aryl aldehydes. It is generated by combining hydroxylamine and...

basicity nearly 100,000x lower than aniline itself. Diazotization gives diazonium derivative, which is a precursor to some diazo dyes. Acetylation affords...

ylide with bromobenzene. In other organic research he showed that diazonium compounds undergo 2+4 cycloaddition to dienes. In the latter half of his stay...