efficient coppercatalyzed one-pot method has been developed for the formation of β-ketophosphine oxides from ketones and H-phosphine oxides under air at room temperature, in which vinylhydrazinedicarboxylate was formed as the key intermediate. Preliminary mechanistic studies indicated that the reaction might involve a radical process and carbonyl oxygen atom of β-ketophosphine oxides came from molecular
Direct synthesis of β-ketophosphine oxides via copper-catalyzed difunctionalization of alkenes with H-phosphine oxides and dioxygen
作者:Guangming Nan、Huilan Yue
DOI:10.1016/j.tetlet.2018.04.042
日期:2018.5
difunctionalization of alkenes with H-phosphine oxides and dioxygen for the synthesis of β-ketophosphine oxides has been developed undermildconditions. The present protocol, which utilizes an inexpensive catalyst, readily available materials, and environmentally benign oxygen source, provides a convenient and cost-effective approach to construct various β-ketophosphine oxides.
Visible Light-Mediated Photocatalytic Metal-Free Cross-Coupling Reaction of Alkenyl Carboxylic Acids with Diarylphosphine Oxides Leading to β-Ketophosphine Oxides
作者:Hai-Feng Qian、Cheng-Kun Li、Zhi-Hao Zhou、Ze-Kun Tao、Adedamola Shoberu、Jian-Ping Zou
DOI:10.1021/acs.orglett.8b02639
日期:2018.9.21
A new visible light-mediated photocatalytic decarboxylative oxyphosphorylation of cinnamicacids with diarylphosphine oxides is described. This reaction is performed under mild conditions to afford the corresponding β-ketophosphine oxides.
A simple and convenient copper‐catalyzed directoxyphosphorylation of enamides with P(O)‐H compounds and dioxygen has been developed under mild conditions. This methodology can allow the synthesis of a series of valuable β‐ketophosphine oxides/β‐ketophosphonates in moderate to good yields with a broad substrate scope simply by using readily‐available starting materials.
Silver‐Catalyzed Oxyphosphorylation of Unactivated Alkynes
作者:Binbin Liu、Qingmin Song、Zhaohong Liu、Zikun Wang
DOI:10.1002/adsc.202100226
日期:2021.7
Here, we describe an application of hydroazidation in the instant activation of alkynes for achieving the oxyphosphorylation of unactivated alkynes with diarylphosphinoyl radicals under mild reaction conditions. This reaction provides a method for accessing β-ketophosphine oxides and phosphorus-containing pyrroles.