SYNTHESE D'IMINES CYCLIQUES NON-STABILISEES PAR REACTIONS GAZ-SOLIDE SOUS VIDE ET THERMOLYSE-ECLAIR (1,2).
Unstabilized cyclic imines 1-4 were synthetized in gram-scale by vacuum dehydrochlorination of N-chlorocycloamines.Azirine 5 was prepared by flash vacuum thermolysis of the corresponding vinylazide 19.All the new compounds were characterized at low temperature by 1H, 13C NMR and IR spectroscopy.
5,6-DIHYDROPYRIDINE : SYNTHESIS AND CHARACTERIZATION
5,6-dihydropyridine 1 is synthesized either by flash vacuum thermolysis of 1-azabicyclo oct-2-ene 3 or by dehydrochlorination over solid bases of N-chloro-1,2,5,6-tetrahydropyridine 4 and characterized at low temperature by its (1)H and (13)C nmr and ir spectra.