Journal of Organic Chemistry p. 6798 - 6806 (2019)
Update date:2022-07-30
Topics:
Qiao, Ming-Ming
Liu, Yi-Yin
Yao, Sheng
Ma, Tian-Cong
Tang, Zi-Long
Shi, De-Qing
Xiao, Wen-Jing
A novel visible-light photoredox-catalyzed phosphinyloxy radical addition/cyclization cascade of arylphosphinic acids or arylphosphonic acid monoesters with alkynes has been developed, which provides an efficient and practical access to various phosphaisocoumarins by using a dual catalytic system containing an acridinium photosensitizer and a cobaloxime proton-reducing catalyst [Co(dmgH)2]PyCl at ambient temperature. This method has advantages of a broad substrate scope, mild condition, as well as no sacrificial oxidant.
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