Copper(II) Acetate‐Catalyzed Synthesis of Phosphorylated Pyridines
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Denitrogenative C−P Coupling between Pyridotriazoles and P(O)H Compounds
作者:Ruwei Shen、Chao Dong、Jianlin Yang、Li‐Biao Han
DOI:10.1002/adsc.201800909
日期:2018.11.5
A new inexpensive copper‐catalyzed denitrogenative C−P coupling reaction of pyridotriazoles with P(O)H compounds has been developed. The reaction proceeds via a process of copper‐catalyzed P(O)−H insertion into the pyridyl carbene intermediates generated in situ from pyridotriazoles. This reaction provides a new and effective method for the synthesis of a variety of 2‐picolylphosphoryl compounds.
Direct phosphorylation of benzylic C–H bonds under transition metal-free conditions forming sp<sup>3</sup>C–P bonds
作者:Qiang Li、Chang-Qiu Zhao、Tieqiao Chen、Li-Biao Han
DOI:10.1039/d2ra02812c
日期:——
Direct phosphorylation of benzylic C–H bonds with secondary phosphine oxides was first realized. The reaction was performed in organo/aqueous biphasic system and under transition metal-free conditions, proceeding via the cross dehydrogenative coupling.
A Metal‐ and Azide‐free Oxidative Coupling Reaction for the Synthesis of [1,2,3]Triazolo[1,5‐a]quinolines and their Application to Construct C−C and C‐P Bonds, 2‐Cyclopropylquinolines and Imidazo[1,5‐a]quinolines
one‐pot cascade oxidative annulation reaction has been developed for the synthesis of [1,2,3]triazolo[1,5‐a]quinolines from methyl azaarenes and N‐tosylhydrazines. The reaction has a broad substrate scope and can be easily scaled up to gram‐scale. 1,2,3‐Triazoles are an important skeletal structure for the construction of C−C and C−P bonds, 2‐cyclopropylquinolines and imidazo[1,5‐a]quinolines, for which different