作者:Cong Ye、Bao-Gui Cai、Juan Lu、Xiao Cheng、Lei Li、Zhong-Wen Pan、Jun Xuan
DOI:10.1021/acs.joc.0c02500
日期:2021.1.1
A blue-light-emitting diode (LED) promoted coupling of aryl diazoacetates with sulfurylides is described. This protocol features mild conditions, good functional group tolerance, and broad substrate scope for both aryl diazoacetates with sulfurylides. Under optimal reaction conditions, a wide range of trisubstituted olefins is obtained in moderate to good yield, which can be further transferred to
HFIP-Promoted Synthesis of Substituted Tetrahydrofurans by Reaction of Epoxides with Electron-Rich Alkenes
作者:Natalia Llopis、Alejandro Baeza
DOI:10.3390/molecules25153464
日期:——
adducts in moderate yields in the majority of cases. Remarkably, this methodology has allowed the synthesis of new tetrahydrofuran-based spiro compounds as well as tetrahydrofurobenzofuran derivatives. The scope and limitations of the process are also discussed. Mechanistic studies were also performed pointing towards a purely ionic or a SN2-type process depending on the nucleophilicity of the alkene