.NET Core Razor in traditional ASP.NET MVC?

Hi all,

Would it be possible to somehow harness the new features of ASP.NET Core's Razor (i.e. injection, tag helpers, and the massively improved compilation time) in an older ASP.NET MVC 4 application by plugging in the new classes into the old ones? Something like adding wrappers and handling injections with Unity containers? If not, what are the problems with this?