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Iodoform (also known as triiodomethane) is the organoiodine compound with the chemical formula C H I 3. It is a pale yellow, crystalline, volatile substance, with a penetrating and distinctive odor (in older chemistry texts, the smell is sometimes referred to as that of hospitals, where the compound is still commonly used) and, analogous to ...
In chemistry, the haloform reaction (also referred to as the Lieben haloform reaction) is a chemical reaction in which a haloform (CHX 3, where X is a halogen) is produced by the exhaustive halogenation of an acetyl group (R−C(=O)CH 3, where R can be either a hydrogen atom, an alkyl or an aryl group), in the presence of a base.
He was one of the first researchers to draw attention to the haloform reaction. In 1822, Serullas added potassium metal to a solution of iodine in ethanol and water to form potassium formate and iodoform, called in the language of that time hydroiodide of carbon, [1] and used as an antiseptic. He is buried in the Père Lachaise Cemetery (10th ...
It is a name reaction, named for Kazuhiko Takai, who first reported it in 1986. [1] In the original reaction, the organochromium species is generated from iodoform or bromoform and an excess of chromium(II) chloride and the product is a vinyl halide. One main advantage of this reaction is the E-configuration of the double bond that is formed.
The generated iodomethane can be distilled from the reaction mixture. Iodomethane may also be prepared by treating iodoform with potassium hydroxide and dimethyl sulfate under 95% ethanol. [7] In the Tennessee Eastman acetic anhydride process iodomethane is formed as an intermediate product by a catalytic reaction between methyl acetate and ...
The reaction requires bromide in combination with oxygen as an oxidant. The oceans are estimated to release 1–2 million tons of bromoform and 56,000 tons [which?] of bromomethane annually. [3] The iodoform reaction, which involves degradation of methyl ketones, proceeds by the free radical iodination.
Lieben iodoform reaction, Haloform reaction; Liebeskind–Srogl coupling; Liebig melamine synthesis; Lindlar catalyst; Lobry de Bruyn–Van Ekenstein transformation;
Chemical structure of 2-iodophenol. An iodophenol is any organoiodide of phenol that contains one or more covalently bonded iodine atoms. There are five basic types of iodophenols (mono- to pentaiodophenol) and 19 different iodophenols in total when positional isomerism is taken into account.