Silver-Catalyzed Direct C${{_{sp{^{2}}}}}$H Phosphorylation of Indoles Leading to Phosphoindoles
作者:Wang-Bin Sun、Jian-Fei Xue、Guo-Yu Zhang、Run-Sheng Zeng、Li-Tao An、Pei-Zhi Zhang、Jian-Ping Zou
DOI:10.1002/adsc.201600001
日期:2016.6.2
The silver carbonate‐catalyzed direct CH phosphorylation of indoles in the presence of magnesium nitrate is described. The reaction affords selectively phosphonoindoles in moderate to good yields through a radical process. This protocol provides an efficient and general method for the preparation of 2‐ and 3‐phosphorylated indoles.
Decarbonylative C–P Bond Formation Using Aromatic Esters and Organophosphorus Compounds
作者:Ryota Isshiki、Kei Muto、Junichiro Yamaguchi
DOI:10.1021/acs.orglett.8b00080
日期:2018.2.16
Ni-catalyzed C–P bond formation was achieved using aromatic esters as unconventional aryl sources. The key to success was the use of a thiophene-based diphosphine ligand (dcypt). Several aromatic esters including heteroaromatics can be coupled with phosphine oxides and phosphates, providing aryl phosphorus compounds. The synthetic utility of the method was demonstrated by application of the present
K<sub>2</sub>S<sub>2</sub>O<sub>8</sub>-Promoted Direct C-H Phosphorylation of (Benzo)thiazoles
作者:Weidong Lin、Feng Su、Hui-Jun Zhang、Ting-Bin Wen
DOI:10.1002/ejoc.201700022
日期:2017.4.3
The directphosphorylation of (benzo)thiazoles with various H-phosphine oxides was realized by using K2S2O8 as the oxidant. A series of 2-phosphoryl (benzo)thiazoles were obtained in moderate to good yields.
cyclization phosphorylation of isocyanides and Csp2−H phosphorylation. Under visible-light irradiation, a series of phosphorus-substituted phenanthridines, benzothiazoles, isoquinolines, and common heteroaromatics were obtained in good to excellent yields without any aid of electrolysis, metal reductants, or oxidants, and with only H2 or CH4 as byproduct.
An efficient and highly regioselective C6-phosphorylation protocol for pyrrolo[2,3-d]pyrimidine (7-DAP) derivatives with various H-phosphine oxides induced by visible light at room temperature is described for the first time. This protocol has been successfully achieved by the combination of Na2-eosin Y as a photocatalyst and LPO as an oxidant under transition metal- and additive-free conditions. The
首次描述了在室温下可见光诱导的吡咯并[2,3- d ]嘧啶(7-DAP)衍生物与各种H-氧化膦的高效且高度区域选择性的C6-磷酸化方案。在无过渡金属和添加剂的条件下,通过组合Na 2 -eosin Y作为光催化剂和LPO作为氧化剂,成功地实现了该协议。广泛的底物范围、良好的官能团耐受性、优异的区域选择性和耐空气条件使得该过程有利于吡咯并[2,3- d ]嘧啶支架的功能修饰,并富集磷酸化的7-DAP化合物用于进一步的生物学评价。