1,5-Hexadiene is the organic compound with the formula (CH)(CH=CH). It is a colorless, volatile liquid. It is used as a crosslinking agent and precursor to a variety of other compounds.
1,5-Hexadiene is produced commercially by the ethenolysis of 1,5-cyclooctadiene:[1]
(CHCH=CHCH) + 2 CH=CH → 2 (CH)CH=CHThe catalyst is derived from ReO on alumina.
A laboratory-scale preparation involves reductive coupling of allyl chloride using magnesium:[2]
2 ClCHCH=CH + Mg → (CH)(CH=CH) + MgCl