Visible-light-promoted trifluoromethylselenolation of -hydroxyarylenaminones.

Development of an efficient process that employs easy to handle and shelf-stable reagents for the synthesis of trifluoromethylselenylated heterocyclics remains a daunting challenge in organic synthesis. Herein, we report a green and practical protocol using trifluoromethyl tolueneselenosulfonate and -hydroxyarylenaminones to access a wide range of chromone derivatives under photocatalyst and oxidant free conditions. This reaction proceeded smoothly under photoirradiation conditions and various functional groups were tolerant of the reaction conditions.