Polymer-supported selenovinyl bromide, easily prepared from polymer-supported selenenyl bromide with acetylene, reacts with different Grignard reagents using a step-by-step strategy to obtain （E）-1, 2-disubstituted ...Polymer-supported selenovinyl bromide, easily prepared from polymer-supported selenenyl bromide with acetylene, reacts with different Grignard reagents using a step-by-step strategy to obtain （E）-1, 2-disubstituted ethenes in good yields.展开更多
Organoselenium reagents are powerful tools for the preparation of small organic molecules.A simple preparation of polystyrene-supported（E）-1-bromo-2-selenoethylene was reported.In the presence of NiCl2（PPh3）2 cata...Organoselenium reagents are powerful tools for the preparation of small organic molecules.A simple preparation of polystyrene-supported（E）-1-bromo-2-selenoethylene was reported.In the presence of NiCl2（PPh3）2 catalyst,polystyrene-supported（E）-1-bromo-2-selenoethylene reacted with different Grignard reagents to offer（E）-1,2-disubstituted ethenes or trisubstituted ethenes.The evident advantages of this reaction are easy operations,odorlessness,good yields of the products.展开更多
基金We are grateful to the National Natural Science Foundation of China(Project No.20332060)the CAS Academician Foundation of Zhejiang Province.
文摘Polymer-supported selenovinyl bromide, easily prepared from polymer-supported selenenyl bromide with acetylene, reacts with different Grignard reagents using a step-by-step strategy to obtain （E）-1, 2-disubstituted ethenes in good yields.
文摘Organoselenium reagents are powerful tools for the preparation of small organic molecules.A simple preparation of polystyrene-supported（E）-1-bromo-2-selenoethylene was reported.In the presence of NiCl2（PPh3）2 catalyst,polystyrene-supported（E）-1-bromo-2-selenoethylene reacted with different Grignard reagents to offer（E）-1,2-disubstituted ethenes or trisubstituted ethenes.The evident advantages of this reaction are easy operations,odorlessness,good yields of the products.
