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Dicarboxylic acids where the carboxylic groups are separated by none or one carbon atom decompose when they are heated to give off carbon dioxide and leave behind a monocarboxylic acid. [26] Blanc's Rule says that heating a barium salt of a dicarboxylic acid, or dehydrating it with acetic anhydride will yield a cyclic acid anhydride if the ...
Upon heating itaconic acid converts to its anhydride. [3] As a dicarboxylic acid, itaconic acid has two pKa's. At pH levels above 7, itaconic acid exists as its double negatively charged form, termed itaconate. [5] As an α,β-unsaturated carbonyl compound, itaconic acid is a good Michael acceptor. Thus, nucleophiles add across the C=C bond.
The acid is commonly traded as a laboratory chemical. It can also be reacted with sulfur tetrafluoride to produce hexafluoro-2-butyne , a powerful dienophile for use in Diels-Alder reactions . Fatty alcohol esters of acetylenedicarboxylic acid can be used for the preparation of phase change materials (PCM).
Numerous organic compounds have other common names, often originating in historical source material thereof. The systematic IUPAC name is not always the preferred IUPAC name , for example, lactic acid is a common, and also the preferred, name for what systematic rules call 2-hydroxypropanoic acid.
Oxalic acid is an organic acid with the systematic name ethanedioic acid and chemical formula HO−C(=O)−C(=O)−OH, also written as (COOH) 2 or (CO 2 H) 2 or H 2 C 2 O 4. It is the simplest dicarboxylic acid. It is a white crystalline solid that forms a colorless solution in water.
Malonic acid is a rather simple dicarboxylic acid, with two carboxyl groups close together. In forming diethyl malonate from malonic acid, the hydroxyl group (−OH) on both of the carboxyl groups is replaced by an ethoxy group (−OEt; −OCH 2 CH 3).
In chemistry, 2,2,3,3-tetramethylsuccinic acid or 2,2,3,3-tetramethylbutane-1,4-dioic acid is a dicarboxylic acid with the formula C 8 H 14 O 4, or HOOC-C(CH 3) 2-C(CH 3) 2-COOH. [1] [2] It can be seen as derivative of succinic acid (butane-1,4-dioic acid) with two methyl groups replacing two hydrogen atoms on each of the central carbon atoms ...
Itaconic anhydride is the cyclic anhydride of itaconic acid (an unsaturated, dicarboxylic acid) and is obtained by the pyrolysis of citric acid.It is a colourless, crystalline solid, which dissolves in many polar organic solvents and hydrolyzes forming itaconic acid. [4]