4,5-Dihydro-1,2,4-oxadiazole as a Single Nitrogen Transfer Reagent: Synthesis of Functionalized Isoxazoles Assisted by Sc(OTf)<sub>3</sub> or Au(I)/Sc(OTf)<sub>3</sub> Synergistic Catalysis
作者:Ali Wang、Peizhuo Lv、Yuanhong Liu
DOI:10.1021/acs.orglett.3c01566
日期:2023.6.16
heterocycle, 4,5-dihydro-1,2,4-oxadiazole, was found to act as a single nitrogen atom transfer reagent via elimination of a ketone/aldehyde and a nitrile. This reagent was successfully applied for the synthesis of isoxazoles from ynones promoted by Sc(OTf)3 or through Au(I)/Sc(OTf)3 synergistic catalysis. The efficiency of this protocol was also demonstrated by its application in modifications of structurally
Alberola, Angel; Calvo, Luis; Rodriguez, Teresa Rodriguez, Journal of Heterocyclic Chemistry, 1992, vol. 29, # 2, p. 445 - 450
作者:Alberola, Angel、Calvo, Luis、Rodriguez, Teresa Rodriguez、Sanudo, Carmen
DOI:——
日期:——
Unusual Reactivity of 4-Vinyl Isoxazoles in the Copper-Mediated Synthesis of Pyridines, Employing DMSO as a One-Carbon Surrogate
作者:Pravin Kumar、Manmohan Kapur
DOI:10.1021/acs.orglett.0c01935
日期:2020.8.7
An efficient protocol for the synthesis of nicotinate derivatives and tetrasubstituted pyridines through a copper-mediated cleavage of isoxazoles has been developed. The highlight of the work is the observation of an unusualreactivity of 4-vinyl isoxazoles under the reaction conditions. DMSO serves as a one-carbon surrogate generating an active methylene group during the reaction to form two C–C bonds