A scalable electrochemical dehydrogenative cross-coupling of P(O)H compounds with RSH/ROH
作者:Yujun Li、Qi Yang、Liquan Yang、Ning Lei、Ke Zheng
DOI:10.1039/c9cc01378d
日期:——
A practical, scalable electrochemical dehydrogenative cross-coupling of P(O)H compounds with thiols, phenols and alcohols in both an undivided cell and a continuous-flow setup is disclosed. Its broad substrate scope (>50 examples), good functional-group tolerance and scalability (>10 g) show potential for practical synthesis. A preliminary mechanistic study suggests that the phosphorus radicals are
-promoted protocol for the selective and controllable esterification of P(O)OH compounds using O-nucleophiles (alcohols and phenols) as efficient esterification reagents is described. This method features a high efficiency and good functional-group tolerance, meaning a simple way to synthesize a broad spectrum of phosphinic and phosphoric acid esters from basic starting materials with moderate to excellent
Highly Efficient and Convenient Access to Phosphinates via CHCl<sub>3</sub>
-Assisted Direct Phosphorylation between R<sub>2</sub>
P(O)H and ROH by Phosphonium Salt Catalysis
作者:Xiaojun Yu、Song Zhang、Zhiyu Jiang、Hong-Su Zhang、Tianli Wang
DOI:10.1002/ejoc.202000385
日期:2020.5.29
A mild, efficient, convenient, and scalable method to synthesize phosphinatesviadirectphosphorylationbetween R2P(O)H and ROH was developed. Preliminary mechanistic studies suggest that a carbene‐involving process from CHCl3 to CH2Cl2 facilitates the phosphorylation.
efficient N,N′-carbonyl diimidazole-catalyzed protocol for the direct esterification of P(O)-OH compounds using phenols as efficient esterification reagents is illustrated. It is a simple way to synthesis a broad spectrum of functionalized O-aryl phosphinates, phosphonates, and phosphates from basic startingmaterials with moderate to excellent yields.
A phosphoryl radical-initiated Atherton-Todd-type reaction using air as the radical initiator and CHCl3 as the halogenating reagent for the phosphorylation of alcohols, phenols, and amines has been developed. This novel transformation provides a highly efficient route to important phosphinates, phosphinic amides, and phosphoramidates in up to 99% yield with a broad substrate scope under very mild conditions