Tuning chemoselectivity in <i>O</i>-/<i>N</i>-arylation of 3-aryl-1,2,4-oxadiazolones with <i>ortho</i>-(trimethylsilyl)phenyl triflates <i>via</i> aryne insertion
作者:Lijing Zhou、Hongji Li、Wenge Zhang、Lei Wang
DOI:10.1039/c8cc00124c
日期:——
A finely tunable chemoselectivity in arylation of 3-aryl-1,2,4-oxadiazolones with ortho-(trimethylsilyl)phenyl triflates is reported, including silver-catalysed O-arylation and metal-free N-arylation.
C–H Activation-Engaged Synthesis of Diverse Fused-Heterocycles from the Reactions of 3-Phenyl-1,2,4-oxadiazol-5(2<i>H</i>)-ones with Vinylene Carbonate
We report the condition-controlled C–H activation-engaged reactions of 3-phenyl-1,2,4-oxadiazol-5(2H)-ones with vinylene carbonate, straightforwardly constructing four divergent fused-heterocycles by tuning the reaction conditions in a one-pot manner.
我们报告了 3-phenyl-1,2,4-oxadiazol-5(2 H )-ones 与碳酸亚乙烯酯的条件控制 C-H 活化参与反应,通过调整反应条件直接构建了四个不同的稠合杂环一锅法。
Cobalt Homeostatic Catalysis for Coupling of Enaminones and Oxadiazolones to Quinazolinones
address the challenge. In particular, a cobalt homeostatic catalysis process has been developed for the water-tolerant coupling of enaminones and oxadiazolones to quinazolinones. Dynamic covalent bonding serves as a mechanistic handle for the preferred buffering of water onto enaminone and reverse exchange by a released secondary amine, thus securing reversible entry into cobalt’s dormant and active states
Synthesis of Pyrazolidinone-Fused Benzotriazines through C–H/N–H Bond Functionalization of 1-Phenylpyrazolidinones with Oxadiazolones
作者:Na Li、Bin Li、Fan Yu、Xinying Zhang、Xuesen Fan
DOI:10.1021/acs.joc.3c00194
日期:2023.7.7
Presented herein is an efficient synthesis of pyrazolidinone-fused benzotriazines through the cascade reaction of 1-phenylpyrazolidinones with oxadiazolones. The formation of the title products is initiated by Rh(III)-catalyzed C–H/N–H bond metallation of 1-phenylpyrazolidinone and subsequent coordination with oxadiazolone followed by migratory insertion along with CO2 liberation, proto-demetallation