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Diacetone alcohol is an organic compound with the formula CH 3 C(O)CH 2 C(OH)(CH 3) 2, sometimes called DAA. This colorless liquid is a common synthetic intermediate used for the preparation of other compounds, and is also used as a solvent.
It can also be obtained by dehydration of 4-hydroxy-pentan-2-one using oxalic acid as a catalyst. [5] 3-Penten-2-one occurs naturally in the berries of two species of Aronia melanocarpa. [7] It has also been found in other plants and foods such as tomatoes, cocoa, tea, and potato chips. [5]
2-Hydroxy-3-methyl-2-cyclopenten-1-one is an organic compound related to 1,2-cyclopentanedione. It is the enol tautomer of the diketone 3-methylcyclopentane-1,2-dione. Being an enol, the compound is often called methylcyclopentenolone. It is a colorless solid.
Hydroxyacetone, also known as acetol, is the organic chemical with the formula CH 3 C(O)CH 2 OH. It consists of a primary alcohol substituent on acetone. It is an α-hydroxyketone, also called a ketol, and is the simplest hydroxy ketone structure. It is a colorless, distillable liquid.
Pentenoic acid is any of five mono-carboxylic acids whose molecule has an unbranched chain of five carbons connected by three single bonds and one double bond.That is, any compound with one of the formulas HO(O=)C−CH=CH−CH 2 −CH 3 (2-pentenoic), HO(O=)C−CH 2 −CH=CH−CH 3 (3-pentenoic), or HO(O=)C−CH 2 −CH 2 −CH=CH 2 (4-pentenoic).
2-Cyclopentenones can be synthesized in a number of ways. One of the routes involves elimination of α-bromo-cyclopentanone using lithium carbonate [2] and Claisen condensation-decarboxylation-isomerization cascades of unsaturated diesters as shown below. [3] Industrial synthesis of cyclopentenone
2-Pentanone or methyl propyl ketone (MPK) is a ketone and solvent of minor importance. It is comparable to methyl ethyl ketone, but has a lower solvency and is more expensive. [5] It occurs naturally in Nicotiana tabacum (Tobacco) [6] and blue cheese as a metabolic product of Penicillium mold growth. [7]
Examples include 2-pentyl- and 2-heptylcyclopentanone. [4] It is a versatile synthetic intermediate, being a precursor to cyclopentobarbital. [5] Cyclopentobarbital, a drug made from cyclopentanone. Cyclopentanone is also used to make cyclopentamine, the pesticide pencycuron, and pentethylcyclanone. [5]