Allelochemicals of barnyardgrass-infested soil and their activities on crops and weeds was written by Khanh, Tran Dang;Xuan, Tran Dang;Chung, Ill Min;Tawata, Shinkichi. And the article was included in Weed Biology and Management in 2008.Computed Properties of C11H12O4 This article mentions the following:
Barnyardgrass is one of the most noxious paddy weeds in the world and causes great trouble to many crops. In a bioassay, the aqueous extract of paddy soil infested with barnyardgrass showed phytotoxic action against the growth of the tested crops and paddy weeds, of which rice was the most suppressed among the crops. In contrast, barnyardgrass was the least affected paddy weed. By the use of a separation resin, 18 compounds belonging to terpenes, derivatives of cinnamic acid and ferulic acid, long-chain fatty acids, and steroids that were potentially involved in the phytotoxic activities in barnyardgrass-infested soil were isolated and identified by gas chromatog.-mass spectrometry anal. Of these, the quantities of linalool, 4-terpinenol, coumaran, Me phenethyl ketone, and Me ester cinnamic acid were 1.42, 0.37, 0.02, 3.12, and 4.59 μg g-1 of the wet soil, resp. The herbicidal activity was varied among these qualified test compounds, in which Me phenethyl ketone and Me ester cinnamic acid were more herbicidal than coumaran, linalool, and 4-terpinenol. A mixture of these compounds was also the least inhibitive against the growth of barnyardgrass, but exerted strong suppression against that of rice and monochoria. The present study demonstrates that barnyardgrass possesses strong phytotoxic properties and releases plant growth inhibitors into the soil to compete with rice and other paddy weeds in its vicinity by a chem. pathway. In the experiment, the researchers used many compounds, for example, 3-(2,4-Dimethoxyphenyl)acrylic acid (cas: 6972-61-8Computed Properties of C11H12O4).
3-(2,4-Dimethoxyphenyl)acrylic acid (cas: 6972-61-8) 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. Ethyl ether is an excellent solvent for extractions and for a wide variety of chemical reactions. It is also used as a volatile starting fluid for diesel engines and gasoline engines in cold weather. Dimethyl ether is used as a spray propellant and refrigerant. Methyl t-butyl ether (MTBE) is a gasoline additive that boosts the octane number and reduces the amount of nitrogen-oxide pollutants in the exhaust. The ethers of ethylene glycol are used as solvents and plasticizers.Computed Properties of C11H12O4
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem