1- triacontanol

The higher alcohols occur in minor quantities primarily as the wax ester (ester of a fatty alcohol and a fatty acid) in many oilseed and marine sources. Free alcohols octacosanol [557-61-9] C2gH gO, and triacontanol [28351-05-5] have been isolated in very small amounts from sugarcane and its... 

Long-chain primary alcohols, eg, triacontanol, can be prepared by the hydroboration, isomerization, and oxidation of the corresponding internal alkenes (437). The less thermodynamically stable stereoisomer can be transformed into the more stable one by heating, eg, i j -into /ra/ j -myrtanjiborane (204). 

Waxes are mixtures of esters of long-chain carboxylic acids with long-chain alcohols. The carboxylic acid usually has an even number of carbons from 16 through 36( while the alcohol has an even number of carbons from 24 through 36. One of the major components of beeswax( for instance, is triacontyl hexadecanoate, the ester of the C30 alcohol triacontanol and the C16 acid hexa-... 

The wax that bees make is a complicated mixture of many compounds, but about 70 percent of it is the wax made from palmitic acid, a fatty acid, and the long-chain alcohol triacontanol (melissyl alcohol). 

Tri (rt-butyl)phosphate (TBP), 79 674 Tri-l,10-phenanthroline-iron(II), 7 589 1-Triacontanol physical properties of, 2 3t cis-21-Triacontenoic acid physical properties, 5 32t Triacetate chiral stationary phase, 6 88t Triacetate fibers, 24 614 Triacetone amine... 

Dhanaraj and R. Seshadri. Free and bound triacontanol in tea leaves. J Agr Food Chem 1988 43(3) 229-233. 

FIGURE 10-5 Biological wax. (a) Triacontanoylpalmitate, the major component of beeswax, is an ester of palmitic acid with the alcohol triacontanol. (b) A honeycomb, constructed of beeswax, is firm at 25 °C and completely impervious to water. The term "wax" originates in the Old English weax, meaning "the material of the honeycomb."... 

Leaf surface compounds provide important information about host-plant acceptability to coleopteran insects. Although the tortoise beetle, Cassida canaliculata, is only weakly attracted to odors from host plants, it shows strong preferences for host plants when additional contact cues are provided.64 The cottonwood leaf beetle, Chrysomela scripta, which is a pest of cottonwood, poplar, and willow, is stimulated to feed by leaf surface chemicals produced by a beetle-preferred poplar clone 65 The feeding stimulants have been isolated and identified as 1-docosanol, 1-tetracosanol, 1-hexacosanol, 1-octacosanol, 1-triacontanol, and... 

For example, beeswax is an ester of palmitic acid with a 30 carbon alcohol, triacontanol. 

Derivation By oxidation of 1-triacontanol, occurs in minor amounts in many plant and insect waxes and in montan wax. 

---