نتایج جستجو برای: methyl alcohol
تعداد نتایج: 224203 فیلتر نتایج به سال:
An efficient stereoselective synthesis of a pivotal intermediate, cyclic allyl alcohol derivative containing two methoxy groups [(±)-22], using for the preparation (±)-trans-dihydronarciclasine analogues was elaborated starting from easily available and inexpensive methyl gallate. This new synthetic route consists 17 reaction steps, provides an opportunity to obtain wanted alkaloid additional g...
The main types of oxygenates, which are used in the manufacture motor gasoline, considered. Oxygenates (oxygen-containing compounds) is general name for lower alcohols and ethers as high-octane components fuels. For a low-octane base to added. In many cases, (methanol, ethanol, etc.) (methyl tert-butyl ether, tert-amyl methyl gasoline. Straight-run gasoline stable often mixed Methanol (CH3OH) s...
the fruit of melia azedarach l. (meliaceae) was extracted with hexane, and its fatty acids methyl ester was analyzed using gc/ms. thirteen components representing 85.1% of the total extract were identified. the major components identified were methyl palmitate (18.8%), methyl linolenate (16.1%) and methyl linoleate (9.8%). the fruits’ extract had a lc50 of 5.5 ppm against the larvae of anophles...
In this study, novel SiO2- and Al2O3-supported Cu-Fe catalysts are developed for selective hydrogenation of 2-methyl-3-butyne-2-ol to 2-methyl-3-butene-2-ol under mild reaction conditions. TEM, XRD, FTIR studies adsorbed CO TPR-H2 performed characterize the morphology, nanoparticle size, particle distribution, as well electronic state deposited metals in prepared catalysts. The deposition Fe Cu...
Addiction to alcohol is one of the main problems in society. Currently, several biochemical mechanisms underlying the development of alcoholism have been discovered. Ethanol (C2H5OH) was shown to be able to interact directly with several receptors on neural cells (nicotinic acetylcholine receptors [1], G proteingated inwardly rectifying K+ channels [2], glycine receptors [3], gamma-aminobutyric...
OBJECTIVE Ethanol blocks N-methyl-d-aspartic acid (NMDA) glutamate receptors. Increased NMDA receptor function may contribute to motivational disturbances that contribute to alcoholism. The authors assessed whether the NMDA receptor antagonist memantine reduces cue-induced alcohol craving and produces ethanol-like subjective effects. METHOD Thirty-eight alcohol-dependent inpatients participat...
The transformation of methyl tert-butyl ether ~MTBE! and tert-amyl methyl ether ~TAME! using bifunctional aluminum in the presence of dioxygen ~O2! has been examined. Bifunctional aluminum, prepared by sulfating zero-valent aluminum with sulfuric acid, is an innovative extension of zero-valent metal technology. It has a dual functionality of simultaneously decomposing both reductively and oxida...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید