Norbornadiene is a bicyclic hydrocarbon. The molecule can be envisioned as a 1,4-cyclohexadiene bridged in the para positions by a methylene group. The compound is related to norbornene in which one of the double bonds is saturated. Norbornadiene and related compounds are of great scientific interest because of the unusual geometry and high reactivity. Synthesis The norbornadiene framework is based on a Diels-Alder reaction between a cyclopentadiene and an alkyne. » Reactions Quadricyclane… (More on Norbornadiene)