Definition, Betydelse & Anagram | Engelska ordet ANHYDRIDE

Definition av ANHYDRIDE

1. (kemi) anhydrid

Exempel på hur man kan använda ANHYDRIDE i en mening

• Both it and the chemical derivative calcium hydroxide (of which quicklime is the base anhydride) are important commodity chemicals.
• Hofmann found that acetic anhydride reacted only with methylaniline, not with dimethylaniline, and was thus able to show that his reaction produced both the mono- and di-methylated forms of aniline:.
• Propionic acid displays the general properties of carboxylic acids: it can form amide, ester, anhydride, and chloride derivatives.
• Phthalates are produced industrially by the acid catalysed reaction of phthalic anhydride with excess alcohol.
• Phthalic acid is produced by the catalytic oxidation of naphthalene or ortho-xylene directly to phthalic anhydride and a subsequent hydrolysis of the anhydride.
• Phthalic anhydride and maleic anhydride are recovered by distillation by a series of switch condensers.
• 4CL forms a hydroxycinnamate–AMP anhydride, followed by a nucleophile attack on the carbonyl of the acyl adenylate.
• Dinitrogen pentoxide (also known as nitrogen pentoxide or nitric anhydride) is the chemical compound with the formula.
• Sverdlov Plant, FSE (Federal State Enterprise) manufactures munitions, battle and industrial explosives, and chemicals for industrial purposes (phenol-formaldehyde resin, epoxy resin, carbamide-furane resin, plasticizers, hardeners of various modifications, nitrobenzene, sulphanole, acetic anhydride, various cleaners and detergents, as well as other products).
• It is also made on an industrial scale from maleic anhydride in the Davy process, which is first converted to the methyl maleate ester, then hydrogenated.
• This compound was first synthesised starting from a cycloaddition of an alkyne with t-Bu substituted maleic anhydride, followed by rearrangement with carbon dioxide expulsion to a cyclopentadienone and its bromination, followed by addition of the fourth t-Bu group.
• In 1871 he discovered the synthesis of phenolphthalein by condensation of phthalic anhydride with two equivalents of phenol under acidic conditions (hence the name).
• They found that 4-amino phthalic anhydride does not melt when heated but does release water upon the formation of a high molecular weight polyimide.
• The mixture is hydrolysed using sodium hydroxide to convert all of the ester to the acid, and this material is cyclised to give rolziracetam using acetic anhydride.
• One method includes an organic compound succinic anhydride and a carboxylic acid docosanoic acid that have been used to attach the different carbon chains (C4 and C22) on 2 and 5 positions of thiophene, via two acylation sequences.
• Coumarin can be prepared by a number of name reactions, with the Perkin reaction between salicylaldehyde and acetic anhydride being a popular example.
• Phthalocyanine is formed through the cyclotetramerization of various phthalic acid derivatives including phthalonitrile, diiminoisoindole, phthalic anhydride, and phthalimides.
• It is used on a large scale to prepare naphthalene dicarboxylic anhydride, which is a precursor to dyes and optical brighteners.
• Dibenzofuran is the precursor to the drug furobufen by Friedel-Crafts reaction with succinic anhydride.
• Like most acid anhydrides, the carbonyl carbon atom of acetic anhydride has electrophilic character, as the leaving group is carboxylate.

Förberedelsen av sidan tog: 280,92 ms.