The synthesis of indolizidine and quinolizidine ring systems by free radical cyclization of 4-aza-6-methoxycarbonyl-5-hexenyl radicals
作者:Athelstan L.J. Beckwith、Steven W. Westwood
DOI:10.1016/s0040-4020(01)81101-7
日期:1989.1
The formation of bicyclic amines by the intramolecular cyclization of 4-aza-6-methoxycarbonyl-5-hexenyl radicals is described. The direct attachment of a nitrogen atom to the double bond changes the electronic nature of the alkene such that the cyclization is less efficient than the all carbon analogue or the other aza-substituted 5-hexenyl cyclizations.The reaction has been used in a short, convenient