- allyl rearrangement
- <chem> ■ Allylumlagerung f
English-german technical dictionary. 2013.
allyl rearrangement
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Réarrangement de Claisen — Le réarrangement de Claisen (à ne pas confondre avec la condensation du même nom) est une réaction chimique formant une liaison carbone carbone, découverte par Rainer Ludwig Claisen. Lorsqu on chauffe un vinyl éther allylique, une transposition… … Wikipédia en Français
Allyl — An allyl group is an alkene hydrocarbon group with the formula H2C=CH CH2 . It is made up of a vinyl group, CH2=CH , attached to a methylene CH2. For example allyl alcohol has the structure H2C=CH CH2OH . Compounds containing the allyl group are… … Wikipedia
Claisen rearrangement — The Claisen rearrangement (not to be confused with the Claisen condensation) is a powerful carbon carbon bond forming chemical reaction discovered by Rainer Ludwig Claisen. The heating of an allyl vinyl ether will initiate a [3,3] sigmatropic… … Wikipedia
Allylic rearrangement — An allylic rearrangement or allylic shift is an organic reaction in which the double bond in an allyl chemical compound shifts to the next carbon atom. It is encountered in nucleophilic substitution.In reaction conditions that favor a SN1… … Wikipedia
Carroll rearrangement — The Carroll rearrangement is a rearrangement reaction in organic chemistry and involves the transformation of a β keto allyl ester into a α allyl β ketocarboxylic acid. [Carrol, M. F. 131. Addition of α,β unsaturated alcohols to the active… … Wikipedia
1,2-Wittig rearrangement — A 1,2 Wittig rearrangement is a categorization of chemical reactions in Organic chemistry, and consists of a 1,2 rearrangement of an ether with an alkyllithium compound [Georg Wittig, L. Löhmann, Ann. 550, 260 (1942)] [G. Wittig, Experientia 14,… … Wikipedia
Di-pi-methane rearrangement — The di pi methane rearrangement is a photochemical reaction of a molecular entity comprising two π systems, separated by a saturated carbon atom (a 1,4 diene or an allyl substituted aromatic analog), to form an ene (or aryl ) substituted… … Wikipedia
2,3-sigmatropic rearrangement — 2,3 Sigmatropic rearrangements are a type of sigmatropic rearrangements and can be classified into two types. Rearrangements of allylic sulfoxides, amine oxides, selenoxides are neutral. Rearrangements of carbanions of allyl ethers are anionic.… … Wikipedia
Divinylcyclopropane-cycloheptadiene rearrangement — The divinylcyclopropane cycloheptadiene rearrangement is an organic chemical transformation that involves the isomerization of a 1,2 divinylcyclopropane into a cycloheptadiene or triene. It is conceptually related to the Cope rearrangement, but… … Wikipedia
di-pimethane rearrangement — noun A photochemical reaction of a molecular entity comprising two p systems, separated by a saturated carbon atom (a 1,4 diene or an allyl substituted aromatic analog), to form an ene (or aryl ) substituted cyclopropane. The rearrangement… … Wiktionary
allylic rearrangement — noun : the migration of an ion or radical from one end of a 3 carbon allyl sequence to the other with concurrent shifting of the position of the double bond (as CH2=CHCHRX → XCH2CH=CHR) … Useful english dictionary
