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Anthraquinone- and naphthoquinonediazepines are formed by the reaction of 1,2- and 2,3-diamino-9,10-anthraquinones and 2,3-diamino-1,4-naphthoquinones with mesityl oxide. It was shown by spectral methods that naphthoquinonediazepine exists in two tautomeric forms.

(1974). 4-METHYLPENT-4-EN-2-ONE (iso-MESITYL OXIDE) Organic Preparations and Procedures International: Vol. 6, No. 3, pp. 131-134.

Selective asymmetric reductions of carbonyl functionalities in α,β-unsaturated carbonyl compounds, such as β-ionone, 2-methylcyclohexenone and mesityl oxide, were successfully carried out using dihydrosilane-chiral rhodium(I) complex catalyst combinations.

Mesityl oxide and related ketones react with protonated nitrogen heterocycles to form fused pyridinium salts.

[1H] Pyrrole (IIa) was reacted with 2-chloroethyl tosylate (III) in acetone in the presence of potassium hydroxide (condition A) to give 1-(4-oxo-2-methyl-2-pentyl) [1H]-pyrrole (IV) instead of 1-(2-tosyloxyethyl) [1H] pyrrole (IIb). IV was obtained from the reaction of IIa and mesityl oxide (V) in acetonitrile in the presence of potassium hydroxide (condition B). With IIa under condition B, crotononitrile, ethyl crotonate, and 4, 4-dimethyl-2-cyclohexenone (IX) gave 3-(1-[1H] pyrrolyl) butyronitrile (VIIa), 3-(1-[1H] pyrrolyl) butyric acid (VIIIa), and a mixture of 4, 4-dimethyl-3-(1-[1H] pyrrolyl) cyclohexanone (X) and 1-cyanomethyl-4, 4-dimethyl-3-(1-[1H] pyrrolyl) cyclohexanol (XI), respectively.

The thioderivative of 2-thenoyltrifluoroacetone [1,1,1-trifluoro-4-(2-thienyl)-4-mercaptobut-3-en-2-one (STTA)] is used for the simultaneous extraction and direct photometric determination of zinc. About 68 μg of zinc was quantitatively extracted at pH 7–7.5 with 10 ml of 0.001 M STTA in carbon tetrachloride as yellow green colored complex. It was measured spectrophotometrically at 450 nm. The system conformed to Beer’s law over the concentration range of 0.4 to 30 μg of zinc per ml. The color of the complex was stable for more than 96 hr. Zinc was extracted quantitatively and was determined in the presence of large excess of (1 : 300) ions which are associated with it. The method was made selective by using sequestering agents like ascorbic, oxalic, citric acids or alkali cyanide to form unextractable negatively charged complexes. The selective extraction with mesityl oxide was used to eliminate the interferences due to iron and chromium. The procedure was found to be applicable for the analysis of zinc ...