5340-48-7Relevant academic research and scientific papers
Deprotonation-alkylation of alkyl cyanides under sonochemical conditions
Berlan,Delmas,Duee,Luche,Vuiglio
, p. 1253 - 1260 (2007/10/02)
Deprotonation-alkylation of n-alkyl cyanides can be readily effected by an alkyl halide in the presence of sodium in a one pot procedure. Yields are generally better than in the usual methods, and the overall reaction conditions have important advantages
Process for introducing alkyl radicals into carbon chains having a functional group and compounds prepared by said process
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, (2008/06/13)
Process for introducing a substituent selected from branched- or straight-chain alkyl radicals having from 1 to 12 carbon atoms, aralkyl or cycloalkyl radicals in which the alkyl moiety has from 1 to 4 carbon atoms, into a carbon chain bearing a stable functional group the said carbon chain having at least one proton in α-position in relation to this functional group, process whereby, in a first step, this carbon chain is reacted with a complex base comprising a mixture of alkali metal amide and alkali metal alcoholate suspended in an anhydrous organic solvent to provide temporarily a carbanion, then in a second step this carbanion is reacted in an anhydrous organic solvent with an alkyl, aralkyl or cycloalkyl halide corresponding to the substituent to be introduced.
Wanderungstendenzen cyclischer, polycyclischer und methylverzweigter Alkylreste bei der Beckmann-Umlagerung
Langhals, Heinz,Ruechardt, Christoph
, p. 3831 - 3854 (2007/10/02)
The migration aptitudes of polycyclic bridgehead groups, cycloalkyl groups as well as of β-, γ- and δ-branched alkyl groups in the Chapman variant of the Beckmann rearrangement were determined.From these data it is concluded that at transition state 2 the migrating group is not resembling a planarised carbenium ion R+, but rather a pentacoordinated carbonium ion structure.Because only small geometrical changes occur in the migrating group vertical stabilisation of charge at transition state is believed to have significant influence on the migration aptitudes.
