ether ring

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• Ring-closing metathesis — or RCM is a variation on olefin metathesis that allows the closing of previously hard to make rings (7 8 member rings in particular). RCM is simply an intramolecular olefin metathesis with a Grubbs catalyst, yielding the cycloalkene and a… …   Wikipedia

• ether — etheric /i ther ik, i thear /, adj. /ee theuhr/, n. 1. Also called diethyl ether, diethyl oxide, ethyl ether, ethyl oxide, sulfuric ether. Chem., Pharm. a colorless, highly volatile, flammable liquid, C4H10O, having an aromatic odor and sweet,… …   Universalium

• Ether — This article is about a general class of organic compounds. For the specific compound, see diethyl ether. For the computer network technology, see ethernet. For the antiquated physics concept, see Luminiferous aether. For other uses, see Aether… …   Wikipedia

• Ether — Als Ether (veraltet Äther) werden in der Chemie organische Verbindungen bezeichnet, die als funktionelle Gruppe eine Ethergruppe besitzen, das heißt ein Sauerstoffatom, das mit zwei Organylresten substituiert ist. In der Umgangssprache bezeichnet …   Deutsch Wikipedia

• Crown ether — 18 crown 6 coordinating a potassium ion Crown ethers are cyclic chemical compounds that consist of a ring containing several ether groups. The most common crown ethers are oligomers of ethylene oxide, the repeating unit being ethyleneoxy, i.e.,… …   Wikipedia

• Polyphenyl ether — Phenyl ether polymers are a class of polymers that contain a phenoxy and or a thiophenoxy group as the repeating group. Commercial phenyl ether polymers belong to two chemical classes: polyphenyl ethers, or PPEs, and polyphenylene oxides, or PPOs …   Wikipedia

• Williamson ether synthesis — The Williamson ether synthesis was developed by Alexander Williamson in 1850. Typically it involves the reaction of an alkoxide ion with a primary alkyl halide via an SN2 reaction. This reaction is important in the history of organic chemistry… …   Wikipedia

• Heterozyklischer Ring — Struktur von Thiophen Heterocyclen sind cyclische chemische Verbindungen mit ringbildenden Atomen aus mindestens zwei verschiedenen chemischen Elementen. Der Name setzt sich zusammen aus griechisch hetero = anders, fremd und lateinisch cyclus =… …   Deutsch Wikipedia

• Silyl enol ether — Silyl enol ethers in organic chemistry are a class of organic compounds sharing a common functional group composed of an enolate bonded through its oxygen terminus to an organosilicon group.Silyl enol ethers are important intermediates in organic …   Wikipedia

• Live ring — Live Live (l[imac]v), a. [Abbreviated from alive. See {Alive}, {Life}.] 1. Having life; alive; living; not dead. [1913 Webster] If one man s ox hurt another s, that he die; then they shall sell the live ox, and divide the money of it. Ex. xxi. 35 …   The Collaborative International Dictionary of English

• Gorintō — A gorintō on top of the Mimizuka with Sanskrit inscriptions Gorintō (五輪塔?) ( five ringed tower ) …   Wikipedia