Are there any 'conjugating agents' to accomplish the above transformation? If not, then how to proceed?
My first instinctive answer would be to use a precious metal catalyst. Palladium usually displays this sort of activity. However, this article should cover most methods from basic and metallic to photochemical. https://www.thieme-connect.de/media/10.1055-b-003-125756/lookinside/10-1055-b-003-125756_chapter012-1.jpg