The nitriles react with organometallic lithium or magnesium, to form ketones, after an acid hydrolysis step.

reaccion-nitrilos-organometalicos

The reaction mechanism occurs with the formation of an imine, which can be isolated or hydrolyzed to form the final ketone.

reaccion-nitrilos-organometalicos

Mechanism for acid hydrolysis of imine:

reaccion-nitrilos-organometalicos