Firstly, the fundamental logistics of amenotejikara and his portal jutsu make it so that the combination of the two is impossible. For Sasuke to teleport Naruto into another dimension, he would need to switch Naruto's location with that of an object in said dimension - which if you recall is not at all possible because as shown in the scan below, all that you see from the portal is darkness. And so, with no target apparent to switch him with, it would fail to work.
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Secondly, Sasuke has never ever been shown to use two immensely taxing space-time ninjutsus at the same time. He simply doesn't have that feat, and honestly, it probably doesn't work. And thirdly, lets say for argument's sake that Naruto willingly hops into the portal and onto another dimension. His speed is simply more than enough for him to zip back through it before it collapses on itself. Naruto is still stronger than Sasuke. Nice try though.