Ethylidene norbornene
Ethylidene norbornene is an organic compound that consists of an ethylene group attached to norbornene. It is a colorless liquid. The molecule consists of two sites of unsaturation, one of which participates in the copolymerization and the second of which undergoes vulcanization. It is a monomer in the production of the commercial polymer EPDM. The compound consists of E- and Z-stereoisomers, but the mixtures are not separated.
It is prepared by isomerization of vinyl norbornene, which in turn is obtained by the Diels-Alder reaction of butadiene and cyclopentadiene.
.Safety
Its ranges from 0.09 to 0.11 ml/kg. It is also a neurotoxin.
