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Benzaldehyde oxime undergoes Beckmann rearrangement to form benzamide, catalyzed by nickel salts [3] or photocatalyzed by BODIPY. [4] Its dehydration yields benzonitrile. It can be hydrolyzed to regenerate benzaldehyde. [5]
Benzonitrile is a useful solvent and a versatile precursor to many derivatives. It reacts with amines to afford N-substituted benzamides after hydrolysis. [3] It is a precursor to diphenylmethanimine via reaction with phenylmagnesium bromide followed by methanolysis.
Download QR code; Print/export Download as PDF; Printable version; In other projects ... Ammonium benzoate can be dehydrated to form benzamide.
Benzamide is an organic compound with the chemical formula of C 7 H 7 NO. It is the simplest amide derivative of benzoic acid . In powdered form, it appears as a white solid, while in crystalline form, it appears as colourless crystals. [ 5 ]
The Hinsberg reaction is a chemical test for the detection of primary, secondary and tertiary amines.The reaction was first described by Oscar Hinsberg in 1890. [1] [2] In this test, the amine is shaken well with the Hinsberg reagent (benzenesulfonyl chloride) in the presence of aqueous alkali (either KOH or NaOH).
Benzophenone imine can also be synthesized by addition of phenylmagnesium bromide to benzonitrile followed by careful hydrolysis (lest the imine be hydrolyzed): [3] C 6 H 5 CN + C 6 H 5 MgBr → (C 6 H 5) 2 C=NMgBr (C 6 H 5) 2 C=NMgBr + H 2 O → (C 6 H 5) 2 C=NH + MgBr(OH) This method is known as Moureu-Mignonac ketimine synthesis. [4]
R 2 C=O + [NH 3 OH]Cl → R 2 C=N−OH + NaCl + H 2 O (in NaOH solution) This reaction is useful in the purification of ketones and aldehydes: if hydroxylamine is added to an aldehyde or ketone in solution, an oxime forms, which generally precipitates from solution; heating the precipitate with an inorganic acid then restores the original ...
A metal ion in aqueous solution or aqua ion is a cation, dissolved in water, of chemical formula [M(H 2 O) n] z+.The solvation number, n, determined by a variety of experimental methods is 4 for Li + and Be 2+ and 6 for most elements in periods 3 and 4 of the periodic table.