dienofuge

Noun

 * 1)  Any organic compound formed when a diene moiety is removed from a molecule
 * Aldrichimica Acta Volume 30 No 4 (pdf) from Sigma-Aldrich
 * However, it is again apparent that cyclopentadiene is a reluctant dienofuge since rearrangement of the strained bicyclo[2.1.0]pentane moiety occurs preferentially.