Water-promoted sulfonylation of propargyl esters leading to highly regioselective and stereoselective formation of （Z）-β-sulfonyl enoates in excellent yields, by a simple, mild, rapid and environmentally benign rea...Water-promoted sulfonylation of propargyl esters leading to highly regioselective and stereoselective formation of （Z）-β-sulfonyl enoates in excellent yields, by a simple, mild, rapid and environmentally benign reaction proce- dure is reported.展开更多
Phosphonium or arsonium salt with primary alcohol can undergo the tandem reaction of deprotonation-oxidation-Wittig reaction in the presence of sodium hydroxide and manganese dioxide, providing a general and efficient...Phosphonium or arsonium salt with primary alcohol can undergo the tandem reaction of deprotonation-oxidation-Wittig reaction in the presence of sodium hydroxide and manganese dioxide, providing a general and efficient method for the stereoselective synthesis of (E) -α, β-unsaturated enoates.展开更多
The reduction of diphenyl ditelluride by the Sm/CrCl_3(cat.) system led to atelluride anion. This species reacted with acid chlorides, alkyl halides, and α,β-unsaturatedenoates or α,β-unsaturated ene nitriles to a...The reduction of diphenyl ditelluride by the Sm/CrCl_3(cat.) system led to atelluride anion. This species reacted with acid chlorides, alkyl halides, and α,β-unsaturatedenoates or α,β-unsaturated ene nitriles to afford telluroesters and unsymniet-ricalphenyltellurides, respectively, in moderate to good yields under mild and neutral conditions.展开更多
文摘Water-promoted sulfonylation of propargyl esters leading to highly regioselective and stereoselective formation of （Z）-β-sulfonyl enoates in excellent yields, by a simple, mild, rapid and environmentally benign reaction proce- dure is reported.
文摘Phosphonium or arsonium salt with primary alcohol can undergo the tandem reaction of deprotonation-oxidation-Wittig reaction in the presence of sodium hydroxide and manganese dioxide, providing a general and efficient method for the stereoselective synthesis of (E) -α, β-unsaturated enoates.
基金theNationalNaturalScienceFoundationofChina (No .2 9872 0 10 )theNaturalScienceFoundationofZhejiangProvince China (No .2 980 6 7)
文摘The reduction of diphenyl ditelluride by the Sm/CrCl_3(cat.) system led to atelluride anion. This species reacted with acid chlorides, alkyl halides, and α,β-unsaturatedenoates or α,β-unsaturated ene nitriles to afford telluroesters and unsymniet-ricalphenyltellurides, respectively, in moderate to good yields under mild and neutral conditions.
