Propynyl

This article is about a functional group. For the phenethylamine, see Propynyl (psychedelic).

Chemical structure of the 2-propynyl (propargyl) group.

In organic chemistry, a propynyl functional group is a propyl bearing a triple bond. The 1-propynyl group has the structure CH₃-C≡C-R. The 2-propynyl group is also known as a propargyl group, and has the structure HC≡C−CH₂-R.