Roses, oil

The product of this reaction is geranyl pyrophosphate Hydrolysis of the pyrophosphate ester group gives geramol a naturally occurring monoterpene found m rose oil... 

Boiler yater treatment Boiling point elevation Bois de Rose oil Bois de rose oil Boll weevil Bollworm Bologna Bolometer Bolometers... 

Rosemary extract Rosemary oil [8000-25-7] Rosenmund reduction Rose oil... 

Bois de Rose. Bois de rose oil is obtained by steam distillation of wood chips from South American rosewood trees, Aniba rosaeodora. The tree, a wild evergreen, grows mainly in the Amazon basin. The oil is used as obtained in perfumery for its sweet, woody-floral odor and as a source of linalool [78-70-6] (3), which it contains to the extent of 70%. Linalool distilled from bois de rose oil is also used directly in perfumery and for conversion to esters, eg, the acetate (1). 

Rosen-kupfer, n. rose copper, -lack, m. rose lake, -lorbeer, m. oleander mountain rose (Rosa). -ol, n. rose oil, attar of roses, -quarz, m. rose quartz. 

Citronellol rose oil, lemon oil Chrysin pinus species... 

Limonene Lemon, orange oil Famesol rose oil, Ambretta sed oil... 

The conversion of isopentenyl diphosphate (IPP) to terpenoids begins with its isomerization to dimethylallyl diphosphate, abbreviated DMAPP and formerly called dimethylallyl pyrophosphate. These two C5 building blocks then combine to give the C10 unit geranyl diphosphate (GPP). The corresponding alcohol, geraniol, is itself a fragrant terpenoid that occurs in rose oil. 

The procedure for the synthesis of the title compound is a representative example of asymmetric hydrogenation in the presence of BINAP-Ru(ll) diacetate.5 The method is based on the synthesis of BINAP-Ru(ll) dicarboxylate complexes and enantioselective hydrogenation of geraniol.7 The present method provides the first practical means for asymmetric synthesis of (S)- and (R)-citronellol. (S)-(-)-Citronellol of optical purity up to 92% can be obtained in a limited quantity from rose oil. A microbiological reduction of geraniol was reported to give enantiomerically pure (R)-(+)-citronellol. ... 

In contrast to the rather simple cases of wintergreen and grape aromas, that for roses is complex. Rose oil contains at least 275 chemical constituents, of which citronellol is the major one. However, two of the minor constituents make the major contribution to rose aroma—p-damascenone and P-ionone ... 

The odor quality and strength of the two citronellol enantiomers were found to be different.The (35)(—)-enantiomer (Rhodinol) possesses a much finer rose odor than the (3i )(+)-enantiomer. (35)(-)-Citronellol has a sweat, peach-like flavor, while (3i )(- -)-citronellol has a bitter taste. (35 )(—)-Citronellol has been found in a number of geranium and rose oils. (3i )(+)-Citronellol occurs in the oils of Ceylon and Java citronella, Cymhopogon winttrianusff Boronia citriodora. Eucalyptus citriodoraff geranium, Spanish verbena and others. Because of the... 

In another variation, the intermediate aldol product 64, with an extra hydroxy group in the y-position, was used to construct the furan ring of rosefuran (65), a trace component of rose oil (Scheme 6.56) (285). Here, the reaction of the nitropentene derivative 61 with crotyl acetate (62) afforded the 3,4,5-trisubstituted isoxazoline (63) in moderate yield. Removal of the acetyl group by saponification of the cycloadduct, subsequent demasking of the aldol moiety using Mo(CO)6, and exposure of the ketodiol (64) to acid gave the target compound 65 (285). 

Rosy floral rose oil free P-citronelloI, geraniol, and nerol geranium oil geraniol esters/monoterp. 

CH3(CH2)vCHO, C9H18O, M, 142.24, Z>pioi.3kPa 190-192°C, df 0.8264, nf 1.4273, occurs in citrus and rose oils. It is a colorless liquid with a fatty-roselike... 

In many natural products citronellol occurs as a mixture of its two enantiomers the pure (+) or (-) form is seldom found. (+)-Citronellol dominates in oils from Boronia citriodora (total citronellol content ca. 80%) and Eucalyptus citriodora (citronellol content 15-20%). (-)-Citronellol is the predominant enantiomer in geranium and rose oils, both of which may contain up to 50% citronellols. 

CnHigO, Mr 190.28, is a constituent of Bulgarian rose oil, to the flavor of which it contributes an important role although it is only present at a concentration of 0.05%. 

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