2-Menthone


Fig. 2 Fluorescence scan of a chromatogram of peppermint oil menthol (1), cineole (2), menthone (3), menthyl acetate (4), menthofuran/terpenes (5). Fig. 2 Fluorescence scan of a chromatogram of peppermint oil menthol (1), cineole (2), menthone (3), menthyl acetate (4), menthofuran/terpenes (5).
Menthone TMS enol ether, TfOH, THF, -40°, 2 h, 51-91% yield."  [c.230]

From a TMS protected triol using (—)-menthone.  [c.230]

Many cycHc ketones occur in natural oils. Jasmone [488-10-8] (3-meth5l-2-(2-pentyl)-2-cyclopenten-l-one) (4) is an odoriferous component of the oil obtained from jasmine flowers. /-Menthone [14073-97-3] (5) is the most frequently occurring of four optically active isomers, and is a colorless Hquid with a minty odor obtained from Mentha species of plants. Muscone [541-91-3] (6) and civetone [542-46-1] (7) are expensive animal products.  [c.500]

Alternatively, (+)-/n j -isolimonene can be isomerized to (+)-2,4(8)- -menthadiene (34), which is partially reduced to (+)-3-menthene (35). Epoxidation of (+)-3-menthene gives the epoxide, which can be isomerized to (—)-menthone.  [c.414]

Carvone, menthone, acetophenone etc Apply an aadic solution of 2,4-dinitrophenyl-hydrazine, 4-nitrophenylhydrazine or 2,4-dinitro-phenylsemicarbazide onto the previously applied sample solution Aliphatic and aromatic hydra-zones and carbazones can be differentiated by their colors [82]  [c.72]

When menthone is reduced there is found, in addition to menthol, a certain amount of isomenthol. This body melts at 78° to 81° and is slightly dextro-rotatory, its specific rotation being -f- 2°.  [c.144]

The most reliable work on the isomeric menthols is that of Pickard and Littlebury.2 Starting from the mixture of alcohols which Brunei had obtained by the reduction of thymol, and which he had described under the name of thymomenthol, they isolated from it about 60 per cent, of isomeric menthols, 30 per cent, of menthones, and several other compounds. They prepared the phthalic acid esters and converted them into their magnesium and zinc salts, which were then fractionally crystallised.  [c.144]


See pages that mention the term 2-Menthone : [c.336]    [c.339]    [c.492]    [c.4]    [c.4]    [c.240]    [c.343]   
Textbook on organic chemistry (1974) -- [ c.335 , c.337 ]