Thankfully the intrepid modding community is doing their part to help keep dreams alive. There is a Portal 2 mod called Portal Stories: VR that does a decent job of replicating environments and the overall tongue-in-cheek tone, but it lacks one important thing: portals. If any existing IP would be a perfect fit, it would be Portal.
The fact that Valve hasn’t created official VR ports of Portal and Portal 2 is one of the greatest travesties of modern virtual reality technology.