Direct, oxidative halogenation of diaryl- or dialkylphosphine oxides with (dihaloiodo)arenes
作者:Jasmin Eljo、Graham K. Murphy
DOI:10.1016/j.tetlet.2018.06.044
日期:2018.8
The oxidative halogenation of diaryl- or dialkylphosphine oxides with the hypervalent iodine reagents (difluoroiodo)toluene (p-TolIF2, 1) and (dichloroiodo)benzene (PhICl2, 2) is reported. Phosphoric fluorides could be recovered in 32–75% yield, or they could be trapped with EtOH to give the corresponding phosphinate in typically good yield. Phosphoric chlorides were not readily isolable, and were
An electrochemical synthetic strategy to construct P(O)–F bonds was developed via the Atherton–Todd reaction. Promoted by Et4NCl, a series of biologically active phosphoric fluorides were synthesized by use of commercially available P(O)–H feedstocks and Et3N·3HF as the F-source. With this protocol, some potentially functional P(O)–OR and P(O)–SR motifs could also be smoothly forged. This sustainable