Concise Synthesis of Novel 2,6-Diazaspiro[3.3]heptan-1-ones and Their Conversion into 2,6-Diazaspiro[3.3]heptanes

A concise synthesis, amenable to library production of 2,6-diazaspiro[3.3]heptan-1-ones and their subsequent conversion into 2,6-diazaspiro[3.3]heptanes is reported.