5-Propyl-5-nonanol

The Guerbet reaction can be used to obtain higher alcohols 2-propyl-1-heptanol [10042-59-8] from 1-pentanol condensation and 6-methyl-4-nonanol from 2-pentanol (80—83). Condensations with alkah phenolates as the base, instead of copper catalyst, produce lower amounts of carboxyhc acids and requke lower reaction temperatures (82,83). The crossed Guerbet reaction of 1-pentanol with methanol in the presence of sodium methoxide catalyst afforded 2-heptanol in selectivities of about 75% (84). 

NONANOL n-NONYL MERCAPTAN BUTYL-PENTYL-SULFIDE ETHYL-HEPTYL-SULFIDE HEXYL-PROPYL-SULFIDE METHYL-OCTYL-SULFIDE n-NONYLAMINE... 

C10H22O 4-methyl-4-nonanol 23418-38-4 18.014 191.627 1,2 21326 C10H22O 2,4-dimethyl-3-propyl-3-pentanol 17.339 186.217 1,2... 

While enologists have been interested in the odorous constituents of grapes and wines for many years, Hennig and Villforth (1942) and Hennig (1943, 1950-1951) seem to have made the first systematic studies on the subject. They extracted wine with pentane and after hydrolysis identified the alcohols and acids. They reported the following aldehydes, ketones, and related compounds (formaldehyde, acetaldehyde, propion-aldehyde, cinnamaldehyde, vanillin, acetone, methyl ketone, acetyl-methylcarbinol, and acetal—caproaldehyde and higher members of the series, benzaldehyde, and furfural were not positively identified but probably also occur) alcohols (methyl, ethyl, isopropyl, isobutyl, isoamyl, and a-terpineol—n-propyl, n-heptyl, and sec-nonyl (2-nonanol)... 

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