R. Gleiter et V. Wolfart, 1,8-DIAZABICYCLO[6.6.6]EICOSA-4,11,17-TRIYNE AND 1,8-DIAZACYCLOTETRADECA-4,11-DIYNE - SYNTHESES AND PROPERTIES .2., Tetrahedron letters, 37(4), 1996, pp. 479-482
The syntheses of 1,8-diazacyclotetradeca-4,11-diyne and 1,8-diazabicyc
lo[6.6.6]eicosa-4,11,17-triyne and 1,8-diazabicyclo[6.6.6]eicosa-4,11,
17-triene are reported.