Composition of tall oil rosin. II. Hydrocarbons derived by dehydration of sterols was written by Lehtinen, Timo;Elomaa, Eero;Alhojarvi, Juha;Bruun, Henrik H.. And the article was included in Suomen Kemistilehti B in 1965.Application of 3929-47-3 This article mentions the following:
Acid matter was removed from the rosin by extraction with 1% aqueous KOH and the neutral matter, recovered from the ether solution, subjected to adsorption chromatography on a silicic acid column. The hydrocarbons eluted with petroleum ether (b.p. 40-60°) amounted to 12% of the neutral matter (2.3% of the total rosin). The main hydrocarbon component was separated by adsorption chromatography on silica gel impregnated with AgNO3, followed by elution with petroleum ether. The hydrocarbons of tall oil rosin are mainly secondary products formed by dehydration of sterols during distillation The main hydrocarbon component was identified as a conjugated Δ3.5-diene (C29H48) derived from β-sitosterol. In the experiment, the researchers used many compounds, for example, 3-(3,4-Dimethoxyphenyl)propan-1-ol (cas: 3929-47-3Application of 3929-47-3).
3-(3,4-Dimethoxyphenyl)propan-1-ol (cas: 3929-47-3) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. But ether is more polar than alkenes. Ethers are good solvents partly because they are not very reactive. Most ethers can be cleaved, however, by hydrobromic acid (HBr) to give alkyl bromides or by hydroiodic acid (HI) to give alkyl iodides.Application of 3929-47-3
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem