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Methanesulfonyl chloride is mainly used to give methanesulfonates by its reaction with alcohols in the presence of a non-nucleophilic base. [8] In contrast to the formation of toluenesulfonates from alcohols and p-toluenesulfonyl chloride in the presence of pyridine, the formation of methanesulfonates is believed to proceed via a mechanism wherein methanesulfonyl chloride first undergoes an ...
Diphenylamine dissolves well in many common organic solvents, and is moderately soluble in water. [6] It is used mainly for its antioxidant properties. Diphenylamine is widely used as an industrial antioxidant , dye mordant and reagent and is also employed in agriculture as a fungicide and antihelmintic .
Many method have been developed for introducing sulfonate groups aside from direction sulfonation. A classic named reaction is the Piria reaction (Raffaele Piria, 1851) in which nitrobenzene is treated with a metal bisulfite forming an aminosulfonic acid as a result of combined nitro group reduction and sulfonation. [2] [5] [6] The Piria reaction
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).
The sulfonate ion. In organosulfur chemistry, a sulfonate is a salt, anion or ester of a sulfonic acid. Its formula is R−S(=O) 2 −O −, containing the functional group −S(=O) 2 −O −, where R is typically an organyl group, amino group or a halogen atom. Sulfonates are the conjugate bases of sulfonic acids.
Benzenesulfonyl chloride is an electrophilic reagent. It hydrolyzes with heat but is stable toward cold water. [2] Amines react to give sulfonamides. This reaction is the basis of the Hinsberg test for amines. [3]
Scandium triflate is used as a reagent in organic chemistry as a Lewis acid. [1] Compared to other Lewis acids, this reagent is stable towards water and can often be used in organic reactions as a true catalyst rather than one used in stoichiometric amounts.
It is used to prepare alkyl triflates from alkyl halides: [5] CF 3 SO 2 OAg + RX → CF 3 SO 2 OR + AgX (X = iodide usually). In coordination chemistry, the salt is also useful to replace halide ligands with the more labile triflate ligand.
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