Hydride-Promoted Ring Expansion of 2-Azaspiropyrrolinium Salts: An Approach Towards the Synthesis of (-)-Nitramine
作者:Norbert De Kimpe、Erick Rosas Alonso、Kourosch Abbaspour Tehrani、Mark Boelens
DOI:10.1055/s-2005-871555
日期:——
synthesis of the spiroalkaloid (-)-nitramine was achieved by electrophile-induced cyclization of a suitably substituted and protected chiral α-allylcy-clohexanecarboxaldimine. Its hydride-promoted ringexpansion after spirocyclization gave rise to the competitive formation of isomeric spiropyrrolidines and a spiropiperidine, the latter being further transformed into (-)-nitramine.
Carruthers, William; Moses, Roger C., Journal of the Chemical Society. Perkin transactions I, 1988, p. 1625 - 1628
作者:Carruthers, William、Moses, Roger C.
DOI:——
日期:——
Biomimetic synthesis of nitraria alkaloids: stereoselective spirocyclization reactions
作者:Martin J. Wanner、Gerit-Jan Koomen
DOI:10.1016/s0040-4020(01)88473-8
日期:1992.1
The Michael-induced spirocyclization of 2-alkylidene glutarimides offers a highly stereoselective method for a biomimetic synthesis of nitramine and for the construction of the nitraramine carbon-nitrogen framework.