Neohexene is the hydrocarbon compound with the chemical formula (CH3)3CCH=CH2.

It is a colorless liquid, with properties similar to other hexenes.

It is a precursor to commercial synthetic musk perfumes.

Neohexene is prepared by ethenolysis of diisobutene, an example of a metathesis reaction:[1] It is a building block to synthetic musks by its reaction with p-cymene.

[1] In the study of C-H activation, neohexene is often used as a hydrogen acceptor.