Studies on the fat-soluble chemical constituents in stalk and leaf of fistular onion was written by Zhang, Geng;Zhou, Yinbo;Zhang, Changgong;Liu, Jingyou;Cheng, Lu. And the article was included in Zhongguo Yaoshi (Wuhan, China) in 2010.Category: ethers-buliding-blocks This article mentions the following:
The objective of this paper was to compare the difference of the chem. constituents between stalk and leaf of fistular onion. The stalk and leaf of fistular onion were extracted by supercritical CO2 fluid resp., and then isolated by silica gel column chromatog. to obtain seven components with different polarities. Then four components of them were analyzed by GC-MS combined with computer database anal. The types of chem. constituents of stalk and leaf of fistular onion were basically similar, but there were more chem. materials in fistular onion stalk. The systematic research on the difference of the chem. constituents between stalk and leaf of fistular onion was significant for the development of them. In the experiment, the researchers used many compounds, for example, N-(3-Methoxyphenyl)pivalamide (cas: 56619-93-3Category: ethers-buliding-blocks).
N-(3-Methoxyphenyl)pivalamide (cas: 56619-93-3) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil. The unique properties of ethers (i.e., that they are strongly polar, with nonbonding electron pairs but no hydroxyl group) enhance the formation and use of many reagents. For example, Grignard reagents cannot form unless an ether is present to share its lone pair of electrons with the magnesium atom. Complexation of the magnesium atom stabilizes the Grignard reagent and helps to keep it in solution.Category: ethers-buliding-blocks
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem