Octene, dimethyl

Dimethyl-6-octen-l-ol, c275 Dimethylolpropionic acid, b201 Dimethyl 3-oxoglutarate, d325... 

Allylic CH bonds Aliphatic alkenes frequently undergo allylic substitution by oxidation of the double bond to a radical cation that undergoes deprotonation at the allylic position and subsequent oxidation of the resulting allyl radical to a cation, which finally combines with the nucleophiles from the electrolyte [21, 22]. The selectivity is mostly low. Regioselec-tive allylic substitution or dehydrogenation is, however, found in some cases with activated alkenes, for example, -ionone that reacts to (1) (Fig. 5) as a major product [23], menthone enolacetate that yields 90% (2) [24], and 3,7-dimethyl-6-octen-l-ol... 

The male produced aggregation pheromone of the Colorado potato beetle, Lepitnotarsa decemlineata, (5)-l,3-dihydroxy-3,7-dimethyl-6-octen-2-one and its (f )-isomer were synthesized using lipase-catalyzed asymmetric acetylation of +)-2,... 

A 1-1., three-necked, round-bottomed flask is fitted with a mechanical stirrer, a reflux condenser attached to a Dean-Stark water separator, and a 250-ml. dropping funnel. The flask is charged with 25.0 g. (0.16 mole) of 3,7-dimethyl-6-octenal (Note 1) and 500 ml. of toluene. The solution is heated to reflux with stirring, and a solution of iV-methylhydroxylamine, methanol, and toluene is added (see below). 

Matheson Coleman and Bell technical-grade 3,7-dimethyl-6-octenal (citronellal), b.p. 87-90° (10 mm.), is used after a simple distillation. 

Citronellal (3,7-dimethyl-6-octenal) Found in essential oils of citronella, eucalyptus citrioda and melissa. Citrus, strong smell very characteristic of citronella. (Fig. 3.8)... 

In a patent dealing with the selective hydrogenation of alkynols, use of palladium catalysts in combination with lower aliphatic amines such as butylamine, ethanolamine, and ethylenediamine, or in liquid ammonia was claimed to be more effective than use in the presence of higher amines, and superior to Lindlar catalyst in both activity and selectivity.43 Thus, linalool was obtained almost quantitatively by hydrogenation of 3,7-dimethyl-6-octen-l-yn-3-ol over Pd-CaC03 in the presence of butylamine (eq. 4.13). 

FEMA No. 2316 Citronellyl Propanoate 3,7-Dimethyl-6-octen- 1-yl Propionate... 

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