Using .NET Core 2.0 for parallel classes from a .NET Framework application

Question

I would like to use the implementations of the .NET Core 2.0 collections of Concurrent and Generic, which are referenced here from the .NET framework application. Creating the .NET Standard library, migrating these classes, and referencing a project in the .NET Framework application does not work. Instead, it launches versions of the .NET Framework classes (which makes sense.)

Is there any way to do this? Our application uses many functions of the Framework that are not included in Core, therefore, unfortunately, we cannot just convert it to the main application.