Loading...

  • price
  • Detailed Diethylene glycol di-methyl ether CAS 111-96-6 Assay:99.9% High quality Best price Diethylene glycol di-methyl etherCAS 111-96-6Assay:99.9%EINECS 203-924-4MF:C6H14O3MW:134. (tradezz.com)
  • atoms
  • The lighter and finer ones floated above and became the Bright Air (Aether and/or Uranus) and the rarefied Wind (Chaos), while the heavier and denser atoms sank and became the Earth (Gaia) and the Ocean (Pontos and/or Oceanus). (wikipedia.org)
  • alcohols
  • The bonding of oxygen in ethers, alcohols, and water is similar. (wikipedia.org)
  • Many classes of compounds with C-O-C linkages are not considered ethers: Esters (R-C(=O)-O-R′), hemiacetals (R-CH(-OH)-O-R′), carboxylic acid anhydrides (RC(=O)-O-C(=O)R′). Ether molecules cannot form hydrogen bonds with each other, resulting in relatively low boiling points compared to those of the analogous alcohols. (wikipedia.org)
  • The difference in the boiling points of the ethers and their isomeric alcohols becomes lower as the carbon chains become longer, as the van der Waals interactions of the extended carbon chain dominates over the presence of hydrogen bonding. (wikipedia.org)
  • Ethers are more polar than alkenes but not as polar as alcohols, esters, or amides of comparable structure. (wikipedia.org)
  • Although many methods are available for forming silyl ethers, two common strategies for the silylation of alcohols are: reaction of the alcohol with a silyl chloride using an amine base at room temperature and reaction of the alcohol with a silyl triflate using a hindered amine base at low temperature. (wikipedia.org)
  • Cyclic
  • Cyclic ethers such as tetrahydrofuran and 1,4-dioxane are miscible in water because of the more exposed oxygen atom for hydrogen bonding as compared to linear aliphatic ethers. (wikipedia.org)
  • reaction
  • Diphenyl ether is a starting material in the production of phenoxathiin via the Ferrario reaction. (wikipedia.org)
  • Getting a good yield of ether requires that ether be distilled out of the reaction mixture before it reverts to ethanol, taking advantage of Le Chatelier's principle. (wikipedia.org)
  • In this case, the reaction proceeds with Pummerer rearrangement: MTM ethers have another advantage. (wikipedia.org)
  • calcium carbonate (CaCO3) is used as an acid scavenger for acid sensitive substrates Iodomethane (MeI) in presence of sodium bicarbonate (NaHCO3) at elevated temperatures (this type of reaction is generally carried out in acetone/H2O solution) Magnesium iodide (MgI) and acetic anhydride (Ac2O) in ether at ambient temperature Corey, E. J. (wikipedia.org)
  • physicists
  • In the late 19th century, physicists postulated that aether permeated all throughout space, providing a medium through which light could travel in a vacuum , but evidence for the presence of such a medium was not found in the Michelson-Morley experiment , and this result has been interpreted as meaning that no such luminiferous aether exists. (wikipedia.org)
  • Michael Brooks lends credence to the story that Einstein's theory of relativity was a response to the alleged failure of the physicists Albert Michelson and Edward Morley to measure the ether drift (23 October, p 32) . (newscientist.com)
  • IUPAC
  • In the IUPAC nomenclature system, ethers are named using the general formula "alkoxyalkane", for example CH3-CH2-O-CH3 is methoxyethane. (wikipedia.org)
  • IUPAC rules are often not followed for simple ethers. (wikipedia.org)
  • prophesy
  • wherefore Ether came forth in the days of Coriantumr, and began to prophesy unto the people, for he could not be b restrained because of the Spirit of the Lord which was in him. (lds.org)
  • anesthetic
  • British doctors were aware of the anesthetic properties of ether as early as 1840 where it was widely prescribed in conjunction with opium. (wikipedia.org)
  • Coriantumr
  • 18 Wherefore, it came to pass that in the first year that Ether dwelt in the cavity of a rock, there were many people who were slain by the sword of those a secret combinations , fighting against Coriantumr that they might obtain the kingdom. (lds.org)
  • for he had sworn to avenge himself upon Coriantumr of the blood of his brother, who had been slain, and the word of the Lord which came to Ether that Coriantumr should not fall by the sword. (lds.org)
  • molecules
  • As a result, the selective deprotection of polyfunctional molecules becomes possible using MTM ethers as the protective groups for their hydroxyl groups. (wikipedia.org)
  • catalysts
  • This process uses solid-supported phosphoric acid catalysts and can be adjusted to make more ether if the need arises. (wikipedia.org)
  • refers
  • Polyether generally refers to polymers which contain the ether functional group in their main chain. (wikipedia.org)
  • The term "crown" refers to the resemblance between the structure of a crown ether bound to a cation, and a crown sitting on a person's head. (wikipedia.org)
  • oxygen
  • Ethers can again be classified into two varieties: if the alkyl groups are the same on both sides of the oxygen atom, then it is a simple or symmetrical ether, whereas if they are different, the ethers are called mixed or unsymmetrical ethers. (wikipedia.org)
  • Oxygen is more electronegative than carbon, thus the hydrogens alpha to ethers are more acidic than in simple hydrocarbons. (wikipedia.org)
  • substance
  • The fifth Orphic hymn to Aether describes the substance as "the high-reigning, ever indestructible power of Zeus," "the best element," and "the life-spark of all creatures. (wikipedia.org)
  • fifth
  • With this addition the system of elements was extended to five and later commentators started referring to the new first one as the fifth and also called it aether , a word that Aristotle had not used. (wikipedia.org)
  • widely
  • Because of its odor reminiscent of scented geranium, as well as its stability and low price, diphenyl ether is used widely in soap perfumes. (wikipedia.org)
  • 21- and 18-membered diazacrown ether derivatives exhibit excellent calcium and magnesium selectivities and are widely used in ion-selective electrodes. (wikipedia.org)
  • Simple
  • This simple diaryl ether enjoys a variety of niche applications. (wikipedia.org)
  • In 1967, Charles Pedersen, who was a chemist working at DuPont, discovered a simple method of synthesizing a crown ether when he was trying to prepare a complexing agent for divalent cations. (wikipedia.org)