Synthesis of Alkyl Aryl Sulfones via Reaction of N-Arylsulfonyl Hydroxyamines with Electron-Deficient Alkenes
作者:Yunhui Bin、Ruimao Hua
DOI:10.3390/molecules22010039
日期:——
Alkyl aryl sulfones were prepared in high yields via the reaction of N-arylsulfonyl hydroxylamines with electron-deficient alkenes. These reactions have the advantages of simplicity, easily available starting materials and mild reaction conditions.
Pd-Catalyzed Desulfitative Heck Coupling with Dioxygen as the Terminal Oxidant
作者:Xianya Zhou、Jiaying Luo、Jing Liu、Shengming Peng、Guo-Jun Deng
DOI:10.1021/ol200101x
日期:2011.3.18
A Pd-catalyzed desulfitativeHeck-typereaction of aromatic sulfinicacid sodium salts with various olefins is developed with O2 as the terminal oxidant under mild conditions. The presence of phosphane ligand DPEphos in anisole can significantly enhance the reaction selectivity.
for the synthesis of β-sulfonyl esters from sulfonyl hydrazides and acrylicesters promoted by DABCO (1,4-diazabicyclo[2.2.2]octane) is described. The reaction is conducted through sulfa-Michael additionreaction in the absence of solvent at 75°C within 2–3 h. The effects of different bases, molar ratio of DABCO, temperature and time parameters on yield of reaction were investigated.