Mode of formation of cyclopentadienylides and cyclopentadienylidenepyrans from diazocyclopentadienes
Abstract
Thermogravimetric analysis of the reactions between diazotetraphenylcyclopentadiene and a number of substrates containing heteroatoms shows that they proceed via a common step, which is taken to be the formation of the carbene, cyclopentadienylidene.