Sasuke wants to kill Naruto after killing Orochimaru, because he believed that killing his best friend/closest one/dearest to him (which was Itachi, his older brother's directions), will complete the transformation of his Mangekyou Sharingan. He will end up using it to claim more power, kill Itachi, and to cut off his bonds with Naruto. This opinion came to him long ago, after the assassination of his clan.
No naruto kills orouchimaru orouchimaru is sasuke's boss
sasuke kills orochimaru cuz he was tired of him controling him and THATS the truth
when orochimaru is about to take over sasuke's body, sasuke does a special gen-jutsu where it reverses so then sasuke takes over orochimarus body and gets all of his power. and that means that orochimaru dies
Orochimaru isn't killed by Sasuke, he is just sealed inside Sasuke's body. When Shikamaru and Naruto kill Kakuzu and Hidan, Sasuke learns last technique from Orochimaru and realizes that Orochimaru is weaker than himself. During the battle between Sasuke and Itatchi, Itatchi draws Orochimaru out of Sasuke and kills him.
HE WANTED TO GET POWER FROM OROCHIMARU AND KILL ITACHI
At the end of Naruto (original) Sasuke wants power and joins orochimaru. In Shippuden Sasuke gets stronger and more evil by killing more people. Sasuke kills Orochimaru and joins the Akatsuki. Right now Sasuke's target is Naruto and Konohagakaru.
he doesnt kill naruto!!!! The manga has a long way to go until it ends, I wouldn't be looking for it any time soon, dude. And also, I don't believe Sasuke would ever kill Naruto. They share a deep bond, and even though Sasuke claims to have severed it, he still cares about Naruto and holds onto his values and morals, even while with Orochimaru. Example of this; Orochimaru repeatedly asks Sasuke to kill, but Sasuke refuses. He only ever knocks his training opponents unconcious. Orochimaru then comments about how much of an effect Konoha and Naruto have had on Sasuke, and that it seems almost irreversible. I just can't see them killing each other, no matter how much they threaten.
When Orichimaru tries to take Sasuke's body. And you can watch that in Naruto Shippuden episodes 113 and 114.......
To gain power from Orochimaru so he could kill Itachi
In episode 114 of Naruto Shippuden, Sasuke seals Orochimaru in himself by backfiring Orochimaru's own technique to switch bodies. Sadly, Orochimaru is still alive in side Sasuke. In a future episode where Sasuke and Itatchi fight, Orochimaru takes control of Sasukes body for a little while before Itachi kills him for good.
Sasuke is using Orochimaru to get stronger to take revenge on his brother itachi. Later Sasuke ends up killing Orochimaru and its because Sasuke thinks he can kill itachi alone without being Orochimaru's Container (host). So he never had any feelings for Orochimaru at all.
No even though he is supposed to kill his best friend (naruto) to obtain the power to kill Itachi. His whole life was dedicated to killing Itachi and Naruto ended up meaning more than that. Sasuke DOES kill Itachi though, without killing Naruto