redirect a domain to specific page on another domain running multisite

I have 2 domains, 1 is running subdomain multisite and the other I just want to redirect to the multisite domain.

Domain1.com = running sub domain multisite

Domain2.com = bare domain to be redirected to domain1.com

I need to redirect domain2.com to domain1.com/cat/page

When I redirect the domain it takes me to

http://ift.tt/1AO5C2z

I have tried several redirect methods:

redirect 301 / domain1.com/cat/page

Within an index.php

header("location:domain1.com/cat/page");

And I have tried forwarding via Plesk control panel. All of these result in me being taken to: http://ift.tt/1AO5C2z

Does anyone have another method to try or know how to resolve this issue?