The oxidation of hydrazones produce a diazo compound: [orgsyn.org - DIAZOPROPANE][1].  
An intermediate in the Bamford-Stevens reaction is a diazo moiety. 
 - When 2-diazopropane decomposes, does it produce 1-propene?
 - Generally speaking, do diazo compounds spontaneously decompose?
 - Is the oxidation of hydrazones used to access alkenes?

  [1]: https://www.orgsyn.org/demo.aspx?prep=cv6p0392