Please read this blog:
http://angularjs.blogspot.nl/2015/08/angular-1-and-angular-2-coexistence.html
It explains how to run it together and how to finally upgrade to Angular 2.
The important thing of this link is:
For this to work, four things need to interoperate between Angular 1
and Angular 2:
- Dependency injection
- Component nesting Transclusion
- Change detection
To make all this possible, we're building a library
named ng-upgrade. You'll include ng-upgrade and Angular 2 in your
existing Angular 1 app, and you'll be able to mix and match at will.
So you need ng-upgrade. See more information about that here: https://angular.io/docs/ts/latest/guide/upgrade.html