Non-cross-linked polystyrene-supported triphenylarsonium halides and their use in the arsa-Wittig reaction
作者:Kelvin C.Y. Lau、Pauline Chiu
DOI:10.1016/j.tet.2011.09.005
日期:2011.11
Non-cross-linked polystyrene-supported (carbomethoxymethyl)triphenylarsonium bromide (1) and benzyltriphenylarsonium iodide (2) were synthesized. They showed similar reactivities compared with the free arsonium salts in the arsa-Wittig reaction. The use of the polymer-supported reagents facilitated product purification and rendered the organoarsenic reagents easily separable and recyclable.
An alternative approach for the synthesis of aryl–alkyl tellurides: reaction of aryl iodides with metal alkyltellurolates promoted by CuI
作者:Márcio S. Silva、João V. Comasseto
DOI:10.1016/j.tet.2011.09.014
日期:2011.11
Aryliodides react with metal organotellurolates in tetrahydrofuran/dimethylformamide in the presence of CuI (5 mol %) or CuI (5 mol %) and 1,10-phenanthroline (10 mol %) to afford the corresponding aryl–alkyl tellurides in good yields.