palladium-catalyzed synthesis of arylphosphonates from arenediazonium tetrafluoroborates and triethylphosphite or diethylphosphite is presented. The reaction tolerates useful substituents including bromo, chloro, nitro, ether, cyano, keto, and ester groups, can be performed as a one-pot process from anilines omitting the isolation of arenediazonium salts, and can be extended to the preparation of arylphosphine
Visible-Light-Induced Nickel-Catalyzed P(O)–C(sp<sup>2</sup>) Coupling Using Thioxanthen-9-one as a Photoredox Catalysis
作者:Da-Liang Zhu、Shan Jiang、Qi Wu、Hao Wang、Lu-Lu Chai、Hai-Yan Li、Hong-Xi Li
DOI:10.1021/acs.orglett.0c03892
日期:2021.1.1
developed for photocatalytic P(O)–C(sp2) coupling of (hetero)aryl halides with H-phosphine oxides or H-phosphites under the irradiation of visible light or sunlight. The thioxanthen-9-one/nickel dual catalysis mediates this phosphonylation to give arylphosphine oxides and arylphosphonates in moderate to excellent yields. This transformation is widely tolerant to a range of functional groups and proceeds
We describe the direct synthesis of organophosphorus compounds from ubiquitous aryl and vinyl carboxylic acids via decarbonylative palladium catalysis. The catalytic system shows excellent scope and tolerates a wide range of functional groups (>50 examples). The utility of this powerful methodology is highlighted in the late-stage derivatization directly exploiting the presence of the prevalent carboxylic
Synthesis of arylphosphonates catalyzed by Pd-imino-Py-γ-Fe<sub>2</sub>O<sub>3</sub> as a new magnetically recyclable heterogeneous catalyst in pure water without requiring any additive
作者:Sara Sobhani、Zohreh Ramezani
DOI:10.1039/c5ra27330g
日期:——
analysis. It was used as a new magnetically recyclableheterogeneous Pd catalyst for the synthesis of arylphosphinates via Csp2–P coupling reactions. A wide range of electrophilic benzenes were coupled successfully with triethylphosphite to generate the corresponding products in good to high yields in pure water without using any additive. The true heterogeneous Pd-imino-Py-γ-Fe2O3 could be reused simply