No Alakazam can´t learn any sleep moves.
But Gallade has better moveset for this.
With False Swipe and Hypnosis. If you don´t want False Swipe take Heal Pulse to raise HP and then lower with a good attack.
Jolly +Spe -SpAtk
Mean Look/ Protect/ Confuse Ray
Leaf Blade*/NightSlash/Close Combat
Sorry for wrong grammar spelling not american and young
Otaku Flame Pirate Ninja Dragon Slayer