Yes, you can go to Canada and work there for at least 365 days in an executive managerial position. Then, after one year, if your employer transfers you to the US branch, they can file your green card in the EB1 category. There is premium processing available for EB1 i140 too. Note that you will need to have approved advance parole to leave the US while your i485 is pending. Otherwise, USCIS may deny your pending i485 once you exit the US.