Lewis acid mediated cyclisations of silylated methylenecyclopropyl hydrazones.
Silylated methylenecyclopropyl hydrazones on treatment with BF3 x Et2O cyclise to give heterocyclic products involving a novel sequence of hydride and silyl shifts via a series of increasingly stable cationic intermediates.
Patient
Lee
L
Department of Chemistry, University of Southampton, Southampton, UK SO17 1BJ.
Berry
Malcolm B
MB
Coles
Simon J
SJ
Hursthouse
Mike B
MB
Kilburn
Jeremy D
JD