methyl ether


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methyl ether

[′meth·əl ′ē·thər]
(organic chemistry)
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[USPRwire, Wed Aug 14 2019] Mono methyl ether of hydroquinone (MEHQ) is an organic compound and synthetic derivative of hydroquinone.
[ClickPress, Wed Aug 14 2019] Mono methyl ether of hydroquinone (MEHQ) is an organic compound and synthetic derivative of hydroquinone.
(R)-(+)-citronellal, o-cymene, d-limonene, eucalyptol, p-menth-1-en-8-ol, eugenol methyl ether and n-heneicosane with extraction yield 3.8% to 91.9%.
Extractives were modeled individually, and collectively, as identifiable lignans (plicatic acid and thujaplicatin methyl ether), thujaplicins (alpha, beta, and gamma-thujaplicin and beta-thujaplicinol), other terpenes (thujic acid and methyl thujate), and total identifiable extractives (sum of quantified extractives).
Polymerization of poly(ethylene glycol) methyl ether acrylate was carried out via ATRP using P(HEMA(20)-co-MMA(80)) (1b) and P(HEMA(50)-co-MMA(50)) (1d) as macroinitiator and CuBr/PMDETA as catalyst system at room temperature in methanol/water.
Isoimperatorin (2), methyl ether aegeline (14) and xanthotoxin (7) were moderately active with % lipid content of 63.46 [+ or -] 0.28%, 64.16 + 3.41 and 67.68 [+ or -]4.1 at 100 [micro]M (p < 0.001).
As seen from the data presented, the methyl ether of oleic acid is contained in the greatest amount (48.90% of masses) while the content of methyl stearate is the least (1.00% of masses).
Table 1-Solvent Properties Solvent Relative Evaporation [T.sub.g] Rate n-butyl actetate=1 ([degrees]C) Ethylene glycol 0.078 -124 n-butyl ether (EB) Diethylene glycol 0.0035 -108 n-butyl ether (DB) Propylene glycol 0.213 -118 n-propyl ether(PnP) Propylene glycol 0.09 -116 n-butyl ether(PnB) Dipropylene glycol 0.012 -104 n-propyl ether(DPnP) Dipropylene glycol 0.0050 -104 n-butyl ether (DPnB) Propylene glycol 0.0012 -96 phenyl ether(PPh) Butyoxy ethyl acetate 0.03 -112 (EB Acetate) Dipropylene glycol 0.03 -106 methyl ether (DPM) Butyoxy ethoxy ethyl 0.002 -100 acetate (DB acetate) Dibutyl phthalate 0.000008 -87 Ester of 2,2,4 trimethyl 0.00165 -84 1,3 pentane diol (Texanol[TM]) (a) (a) Texanol is a registered trademark of Eastman Chemical Company.
Results revealed that there is 22% monoterpene hydrocarbons ([alpha]-thujene, [alpha]-pinene, camphene, myrcene, [alpha]-phellandrene, p-cymene, [gamma]terpinene, terpinolene), 7.1% monoterpene alcohols (1,8-cineole, cis-sabinene hydrate, linalool, borneol, menthol), 62.4% monoterpene phenols (thymol, carvacrol), 1.2% monoterpene phenol derivatives (thymol methyl ether, carvacrol methyl ether), 4.2% sesquiterpene hydrocarbons ([beta]-caryophyllene, ahumulene, [beta]-bisabolene, [gamma]-cadinene, [delta]-cadinene), 0.5% oxygenated sesquiterpenes (caryophyllene oxide, 10-epi-[gamma]-eudesmol) and 1.6% aliphatic alcohol (1octen-3-ol) in leaf oil.
A derivative of methanol, a source of energy now being developed as an alternative to LPG (Liquefied Petroleum Gas) is Di methyl Ether (DME).
Other names of MTBE are 2-Methoxy-2-methylpropane; tertiary butyl methyl ether; Methyl, 1-dimethyl ethyl ether (Galvis, 2000).