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Kapitel 11

Ether, Epoxide, Sulfide

Struktur und Nomenklatur der Ether
Struktur und Nomenklatur der Ether
Structure and Bonding Ethers are organic compounds with an ether functional group which is characterized by an oxygen atom connected to two — ...
Physikalische Eigenschaften von Ethern
Physikalische Eigenschaften von Ethern
Overview An ether molecule has a net dipole moment due to the polarity of C–O bonds. Subsequently, boiling points of ethers are lower than those of ...
Ether aus Alkoholen: Alkoholdehydrierung und Williamson-Ether-Synthese
Ether aus Alkoholen: Alkoholdehydrierung und Williamson-Ether-Synthese
Overview Ethers can be prepared from organic compounds by various methods. Some of them are discussed below, Preparation of Ethers by Alcohol Dehydration ...
Ether aus Alkenen: Alkoholaddition und Alkoxymerkuration-Demerkuration
Ether aus Alkenen: Alkoholaddition und Alkoxymerkuration-Demerkuration
Overview Ethers can also be prepared from alkenes through acid-catalyzed addition of alcohols and alkoxymercuration–demercuration. Preparation of ...
Ether zu Alkylhalogeniden: Saure Spaltung
Ether zu Alkylhalogeniden: Saure Spaltung
Ethers are generally unreactive and unsuitable for direct nucleophilic substitution reactions since the alkoxy groups are strong bases and, therefore, ...
Autoxidation von Ethern zu Peroxiden und Hydroperoxiden
Autoxidation von Ethern zu Peroxiden und Hydroperoxiden
Ethers represent a class of chemical compounds that become more dangerous with prolonged storage because they tend to form explosive peroxides when ...
Kronen-Äther
Kronen-Äther
Crown ethers are cyclic polyethers that contain multiple oxygen atoms, usually arranged in a regular pattern. The first crown ether was synthesized by ...
Struktur und Nomenklatur von Epoxiden
Struktur und Nomenklatur von Epoxiden
Cyclic ethers are heterocyclic compounds with an oxygen atom in the ring along with carbon atoms. They are named depending on the number of carbon atoms ...
Herstellung von Epoxiden
Herstellung von Epoxiden
Overview Epoxides result from alkene oxidation, which can be achieved by a) air, b) peroxy acids, c) hypochlorous acids, and d) halohydrin ...
Scharfe Epoxidierung
Scharfe Epoxidierung
The conversion of allylic alcohols into epoxides using the chiral catalyst was discovered by K. Barry Sharpless and is known as Sharpless epoxidation. The ...
Säurekatalysierte Ringöffnung von Epoxiden
Säurekatalysierte Ringöffnung von Epoxiden
Epoxides that are three-membered ring systems are more reactive than other cyclic and acyclic ethers. The high reactivity of epoxides originates from the ...
basenkatalysierte Ringöffnung von Epoxiden
basenkatalysierte Ringöffnung von Epoxiden
Due to their highly strained structures, epoxides can readily undergo ring-opening reactions through nucleophilic substitution, either in the presence of ...
Struktur und Nomenklatur von Thiolen und Sulfiden
Struktur und Nomenklatur von Thiolen und Sulfiden
Thiols and sulfides are sulfur analogs of alcohols and ethers, respectively, where the sulfur atom takes the place of the oxygen atom. Thus, thiols are ...
Herstellung und Reaktionen von Thiolen
Herstellung und Reaktionen von Thiolen
Thiols are prepared using the hydrosulfide anion as a nucleophile in a nucleophilic substitution reaction with alkyl halides. For instance, bromobutane ...
Herstellung und Reaktionen von Sulfiden
Herstellung und Reaktionen von Sulfiden
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups ...
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