An
efficient strategy for the preparation of aryl phosphonates
via blue-light-promoted single electron transfer process of an EDA
complex between phosphites and thianthrenium salts has been demonstrated.
The corresponding substituted aryl phosphonates were obtained in good
to excellent yields, and the byproduct thianthrene can be recovered
and reused in quantity. This developed method realizes the construction
of aryl phosphonates through the indirect C–H functionalization
of arenes, which has potential application value in drug discovery
and development.
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