Bicyclo[1,1,0]butane (157-33-5) 's Synthetic route

2,3-Diazabicyclo<2.1.1>hex-2-ene. Synthesis and Thermal Decomposition

Chang, Moon Ho  Dougherty, Dennis A.

Addition of triazolinedione to bicyclobutane followed by hydrolysis-oxidation gives the title compound, which decomposes thermally to give bicyclobutane.