Palladium-catalyzed substitutions of triflates derived from tyrosine-containing peptides and simpler hydroxyarenes forming 4-(diethoxyphosphinyl)phenylalanines and diethyl arylphosphonates
The Synthesis of Biarylmonophosphonates via Palladium-Catalyzed Phosphonation, Iridium-Catalyzed C-H Borylation, Palladium-Catalyzed Suzuki–Miyaura Cross-Coupling
作者:Simon Doherty、Julian G. Knight、Tina S. T. Tran、Hussam Y. Alharbi、Daniel O. Perry
DOI:10.1007/s10562-021-03643-3
日期:2022.2
arylboronic esters as the sole product; the resulting boronic esters were used as nucleophilic reagents in a subsequent palladium-catalyzed Suzuki–Miyauracross-coupling to generate a range of biarylmonophosphonates. Gratifyingly, the Suzuki–Miyauracross-coupling can be conducted without purifying the boronic ester which greatly simplifies the synthetic procedure. Graphical Abstract
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
Visible-Light Photo-Arbuzov Reaction of Aryl Bromides and Trialkyl Phosphites Yielding Aryl Phosphonates
作者:Rizwan S. Shaikh、Simon J. S. Düsel、Burkhard König
DOI:10.1021/acscatal.6b02591
日期:2016.12.2
Aryl phosphonates are functional groups frequently found in pharmaceutical and crop protection agents. For their synthesis via C–P bond formation typically transition-metal-catalyzed reactions are used. We report a visible-light photo-Arbuzov reaction as an efficient, mild, and metal-free alternative. Rhodamine 6G (Rh.6G) is used as the photocatalyst, generating aryl radicals under blue light. Coupling
Catalyst-free phosphorylation of aryl halides with trialkyl phosphites through electrochemical reduction
作者:Shuai Wang、Cheng Yang、Shuo Sun、Jianbo Wang
DOI:10.1039/c9cc07069a
日期:——
A catalyst-free electrochemical cross-coupling reaction of aryl halides with trialkyl phosphite has been developed. This reaction proceeds in an undivided cell with a low-cost Ni anode and a graphite cathode under mild and neutral conditions. A wide range of functional groups are well-tolerated and the phosphorylated product can be obtained on the gram scale, showing that this transformation has the
Abstract Diethyl arylphosphonates are efficiently and rapidly prepared from arylhalides, by a palladium catalysis, performed in a Teflon autoclave undermicrowave radiation generated by a commercial microwave oven.