What would that look like?
More useful would be to buy Bitcoin with cash, mix, and then invest assets somewhere anonymously. But it's a hard problem, because wherever assets appear in meatspace, there's typically the need to explain their origin. That's where many people get caught. Such as Tomáš Jiříkovský of Sheep Marketplace infamy.
Well, it could be an all-too-typical small startup, losing money to build market share. You could pose as the major investor, living in some war zone, and funding through Bitcoin. But I doubt that it would pass an audit.
Actually laundering money through Bitcoin is nontrivial. You can replace networks of agents, moving cash around, with anonymous Bitcoin wallets. But you may still need to explain where the assets came from.
But maybe too obvious. Anonymous lottery, right? Suspicious.