Carveol acetate

Carboiimide-polystyrene, 95, 99 Carbonyl compounds, 36 Carcinogens, OSHA list of, 128 Carveol [2-Cyclohexen-l-ol, 2-methyl-5-(1-methylethenyl)-], 106 Carveol acetate [2-Cyclohexene-l-ol, 2-... 

Carbon monoxide, 57, 11 Carbonyl compounds, 56, 36 Carboxylic acids, a-bromination of, 55, 31 CARBOXYLIC ACID CHLORIDES, ketones from, 55, 122 CARBYLAMINE REACTION, 55, 96 Carcinogens, list of. 56, 128 58, 168 Carveol, 56, 106 Carveol acetate, 56, 106 Catechols, 58, 125... 

On oxidation with chromic acid in acetic acid solution, dihydrocarveol yields dihydrocarvone, which has a specific gravity 0 928 at 19°, and refractive index 1-47174. The dihydrocarvone from Zae o-dihydro-carveol is dextro-rotatory, and -vice versa. Its oxime melts at 88° to 89° for the optically active variety, and at 115° to 116° for the optically inactive form. 

Caprylic m-Carveol Citral neral Decyl acetate a-Ionone Caryophyllene... 

Formic (rans-Carveol Citronellal Ethyl acetate Methyl a-p-Copaene... 

Examples of the use of chromium(VI) reagents to effect the allylic oxidation of alkenes to give a,3-unsaturated carbonyl compounds are very common in the literature. "-" The reaction was first report by Treibs and Schmidt" for the allylic oxidations of a-pinene to verbenone and veibenol, of dipentene to carvone and carveol, and of cyclohexene to cyclohexenol and cyclohexenone, using a solution of chromium trioxide in a mixture of acetic anhydride and carbon tetrachloride. However, yields were low and no synthetic use of this observation was made. 

Alkylation of isovaleramide with 1,3-dichlorobut-2-ene yields (139) after methyl-ation acid-catalysed hydrolysis and internal aldol condensation gives ( )-piperitone. The value of piperitenone and isopiperitenone formation, probably via electrocyclic reaction of the pyrolytic acetic acid-elimination product from A - and A -isomers of (49), cannot be assessed in the absence of reaction yields. (S)-(-)-Pulegone is obtained in good yield from (- )-citronellol by oxidation with pyridinium chlorochromate followed by double-bond isomerization. Low-temperature reduction of ( —)-carvone to ( —)-cz5-carveol (140) and... 

Monoterpenols were esterified by lipases from various micro-organisms (especially Aspergillus spp.),931 and ( )-carvyl acetates were hydrolysed by other species to give chiral carveols together with (unreacted) acetates of the enantiomer.932 The metabolic pathways for the conversions of (—)-carvone into (—)-... 

Further n.m.r. data have been published on isomeric menthyl cf. Vol. 7, pp. 5, 29) and carvomenthyl alcohols and some derivatives.N.m.r. data include [Eu(dpm)3] methyl shift assignments in the menthols, the menthones, two carvomenthols, the isopulegols, the carveols, carvone, carvotanacetol, and carvotanacetone, together with the relevant acetates, and an analysis of... 

L Carvone (42%-80%) acetates of dihydro-carveol and dihydrocuminyl alcohol,... 

Butyl lactate Butyl laurate Butyl levulinate Butylparaben Butyl phenylacetate n-Butyl propionate Butyl stearate Butyl sulfide Butyl 10-undecenoate Butyl valerate n-Butyraldehyde n-Butyric acid Camphene Caproic acid Caprylic alcohol Carvacrol Carvacryl ethyl ether Carveol 4-Carvomenthenol Carvone d-Carvone CarvyI acetate CarvyI propionate 3-Caryophyllene 1,4-Cineole Cinnamal Cinnamaldehyde ethylene qlycol acetal Cinnamic acid Cinnamyl acetate Cinnamyl alcohol... 

Yomogi alcohol, aitemlsia alcohol, davanone, lyratol + lyratyl acetate, chrysanthenol, carveol, carvone, dihydrocarvone, terpinene-4-ol, y-campholenol, myrtenol, p terpineol, 4-thujene-2-a-yl-acetate, carveyl acetate, fkcubebene, juniper camphor, thymol, P-terpenyl acetate, linalool Sabinene, germacrene D... 

The reference standards of different monoterpenes, sesquiterpenes, and alkanes were obtained from Aldrich Chemical Co., Inc. (Milwaukee, WI, USA), Fluka Chemical Corporation (New York, NY, USA), Roth Co. Chemische Fabrik (Karlsruhe, Germany), Sigma Chemical Co. (St. Louis, MO, USA) and Varian Associated (Houston, TX, USA). These reference standards include tricyclene, a-pinene, sabinene, a-phellandrene, 1-decene, limonene, fenchone, a-terpineol, a-terpinolene, c/s-verbenol, cis- and trans-carveol, cA-dihydrocarveol, a-longipinene, a-cedrene, (-)-isolongifolol, a-humulene, valencene, cuparene, myristyl alcohol, citronellyl acetate, neryl acetate, geranyl acetate, camphene, alloaromadendrene, -eicosane, and n-heneicosane. Solutions were prepared in methanol at concentrations of 10 mg/mL. For GC/MS analysis each standard solution was diluted by mixing 0.1 mL of the standard solution with 0.9 mL of methanol. 

Figure 15 A comparison of the total ion chromatograms of the volatile aroma components of (a) a ripe Bartlett pear and (b) a pear-flavored jelly bean isolated by headspace SPME. Small plugs of the pear were removed with the blunt end of a disposable pipet and placed into a 20-mL headspace vial for extraction. The jelly bean was forced into a smaller 4-mL vial. Headspace extraction was performed on each sample for 10 minutes at room temperature using a 100-(xm PDMS fiber. Peak identities are as follows (1) butyl acetate, (2) hexyl acetate, (3) methyl cis-4-decenoate, (4) ethyl cis-4-decenoate, (5) methyl frawi-2-cw-4-decadienoate, (6) ethyl frani-2-ds-4-decadienoate, (7) a-famesene, (8) isoamyl acetate, (9) ds-3-hexenyl acetate, and (10) carveol propionate.

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