Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Aryldiazonium tetrahaloborates

ScHiEMANN reaction Aryldiazonium hexafluorophosphates. Aryldiazonium tetrahaloborates. Fluoroboric acid. [Pg.661]

Aryldiazonium tetrahaloborates, ArN=NBX4, In the Schiemann reaction, an arylamine is diazotized in aqueous hydrochloric acid solution, and the solution or suspension of aryldiazonium chloride is treated with a solution of fluoroboric acid prepared by dissolving boric acid with cooling to 20-25° in commercial 50-60% hydrofluoric acid contained in a reaction flask coated with wax or lined with copper, lead, or silver. The aryldiazonium tetrafluoroborate is collected, dried, and decomposed by pyrolysis. Examples are ... [Pg.755]

Deamination Aryidiazonium hexafluorophosphates. Aryldiazonium tetrahaloborates. Di-fluoroamine. Dinitrogen tetroxide (White). Hydroxylamine-O-sulfonic aeid. Hypophos-phorous acid. 3-Nitro-N-nitrosocarbazole. Nitrosyl chloride. Tetramethylurea. Debenzylation of benzoylamines Triethyloxonium fluoroborate. [Pg.1387]

Aryldiazonium tetrahaloborates, 1, 43-44 2, 25. Correction to 2, 25 The last sentence should read If decomposition occurs near room temperature, the salt should never be allowed to dry completely and should be used as soon as possible. [Pg.11]

Aryldiazonium tetrahaloborates, 16 Aryl methyl ethers, 115 Arylthallium ditrifluoroacetates, 287-288 Aryl trifluoroacetates, 287 Asparagine, 102 Aspidosperma alkaloids, 196 (+)-Aspidospermidine, 196 Asymmetric synthesis, 199—200 Aurantiocladin, 7 Autoxidation, 245... [Pg.192]

See other pages where Aryldiazonium tetrahaloborates is mentioned: [Pg.289]    [Pg.289]    [Pg.289]    [Pg.289]   
See also in sourсe #XX -- [ Pg.43 ]

See also in sourсe #XX -- [ Pg.25 ]



SEARCH



Aryldiazonium

Tetrahaloborate

© 2024 chempedia.info