Mc. Lallemand et al., ASYMMETRIC-SYNTHESIS .36. SYNTHESIS OF TETRAHYDROAZOCINES BY [2-DIHYDROPYRIDINE(2] THERMAL CYCLOADDITION TO LATENT 1,4), Tetrahedron letters, 36(12), 1995, pp. 2053-2056
The regiospecific formation of tetrahydroazocines 7-9 by [2+2] cycload
dition of an activated alkyne to substrates of type 1 is reported. Thi
s procedure provides a simple access to chiral functionalized eight-me
mbered rings.