Propargyl

The propargyl group is a hydrocarbon group in the field of organic chemistry. It consists of the unsaturated propyne radical containing a triple bond, and is the Alkinhomologe the allyl group.

Cationic removable radicals are at the propargyl bound so arises from the spin-off the propargylic. This is resonance-stabilized between the limiting structures of Propargylkations and Propadienkations. Attacking nucleophiles can react in two positions, so that different products are formed.

To obtain a substitution in propargylic a Nicholas reaction can be carried out, in which the triple bond is protected beforehand by formation of a cobalt complex.