Add time:10/01/2019 Source:sciencedirect.com
A mild and efficient method for the synthesis of 6-difluoromethylenephosphonyl-phenanthridines through visible-light-promoted radical difluoromethylenephosphonation of 2-isocyanobiaryls with bromodifluoromethylphosphonate has been developed. The reaction allows the direct formation of Csp2CF2PO(OEt)2 and CC bonds via a proposed tandem radical cyclization process.
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