Cyclopropyl cyanide is an organic compound consisting of a nitrile group as a substituent on a cyclopropane ring.

In 1958, cyclopropyl cyanide was first studied for its rotational spectra, by Friend and Dailey.

[citation needed] An additional experiment involving cyclopropyl cyanide was the determination of the molecular dipole moment through spectroscopy experiments, by Carvalho in 1967.

[3] Cyclopropyl cyanide is prepared by the reaction of 4-chlorobutyronitrile with a strong base, such as sodium amide in liquid ammonia.

The radicals then react to yield carbon=carbon double bonds.