Selective oxygenation of alkynes: a direct approach to diketones and vinyl acetate
作者:Xiao-Feng Xia、Zhen Gu、Wentao Liu、Ningning Wang、Haijun Wang、Yongmei Xia、Haiyan Gao、Xiang Liu
DOI:10.1039/c4ob01404a
日期:——
Convenient and expedient methods for the synthesis of α-diketones and β-haloenol acetates from arylalkynes using PhI(OAc)2 as an oxidant are developed at room temperature.
Stereoselective Synthesis of 2-Functionalized 1-Bromo-1-iodo-1-alkenes by Electrophilic Iodination of 1-Bromo-1-alkynes
作者:José Barluenga、Miguel A. Rodríguez、Pedro J. Campos
DOI:10.1055/s-1992-26086
日期:——
1-Bromo-1-alkynes 1 react with bis(pyridine)iodine(I) tetrafluoroborate (2) and nucleophiles (AcOH, HCO2H, Cl-, Br-, I-) to give in a stereoselective addition 2-functionalized 1-bromo-1-iodo-1-alkenes 3