Collect. Czech. Chem. Commun.
1976, 41, 1935-1943
https://doi.org/10.1135/cccc19761935
Synthesis of 4-azatricyclo[4,4,0,03,8]decan-5-one - A lactam with a non-planar cis-amide group and related compounds
M. Tichý, E. Hamšíková and K. Bláha