“…Although significant progress made in the synthesis of OSe compounds, their development has been frequently hindered by different synthetic complications. 44,47 These challenges include the use of complicated reaction conditions ( e.g. absence of O 2 /air or elevated temperature) as well as the hazardous, costly, sensitive, and limited functional group tolerance OSe reagents such as SeOCl 2 , KSeCN, SeCl 4 , and SeF 6 .…”