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The compound is prepared by base-catalyzed condensation of 1-hydroxyhexane-2,5-dione, a derivative of hydroxymethylfurfural. [2] The structure has been confirmed by X-ray crystallography. [2] Quantum calculations also indicate that the enol is strongly favored relative to the diketo tautomer.
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] 3-Penten-2-one can be used for the synthesis of other compounds such as the alkaloids senepodine G and cermizine C, for example. [7]
As an enone, 2-cyclopentenone undergoes the typical reactions of α-β unsaturated ketones, including nucleophilic conjugate addition, the Baylis–Hillman reaction, and the Michael reaction. Cyclopentenone also functions as an excellent dienophile in the Diels–Alder reaction , reacting with a wide variety of dienes .
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]
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.
The reaction of propiophenone (1) with cyanide gives 2-hydroxy-2-phenylbutanenitrile (2). [ 3 ] [ 4 ] Acid hydrolysis of the nitrile to a carboxylic acid gives 2-hydroxy-2-phenylbutanoic acid ( 3 ). The reduction by hydride of the acid to the alcohol gives 2-phenyl-1,2-butanediol ( 4 ).
3-Hydroxyvaleric acid (3-hydroxypentanoic acid) is the organic compound with the formula CH 3 CH 2 CH(OH)CH 2 CO 2 H.It is one of the hydroxypentanoic acids. [1] It is made from odd carbon fatty acids in the liver and rapidly enters the brain.
Calconcarboxylic acid (IUPAC name 3-hydroxy-4-[(2-hydroxy-4-sulfonaphthalen-1-yl)diazenyl]naphthalene-2-carboxylic acid; commonly called Patton and Reeder's Indicator) is an azo dye that is used as an indicator for complexometric titrations of calcium with ethylenediaminetetraacetic acid (EDTA) in the presence of magnesium. [2]