Synthesis of cyclic sulfides by intramolecular ring opening of epoxides by thiolates generated by nickel complex catalyzed electroreduction of thioacetates
The nickel(II) complex catalyzed electroreduction of thioacetates attached to epoxides provided five- to seven-membered cyclic sulfides in good to high yields by regioselective ring opening of epoxides followed by thioheterocyclization. (C) 2000 Elsevier Science Ltd. All rights reserved.
Enantioselective Synthesis of Chiral Sulfones by Ir-Catalyzed Asymmetric Hydrogenation: A Facile Approach to the Preparation of Chiral Allylic and Homoallylic Compounds
作者:Taigang Zhou、Byron Peters、Matías F. Maldonado、Thavendran Govender、Pher G. Andersson
DOI:10.1021/ja306731u
日期:2012.8.22
A highly efficient and enantioselective Ir-catalyzed hydrogenation of unsaturatedsulfones was developed. Chiral cyclic and acyclic sulfones were produced in excellent enantioselectivities (up to 98% ee). Coupled with the Ramberg-Bäcklund rearrangement, this reaction offers a novel route to chiral allylic and homoallylic compounds in excellent enantioselectivities (up to 97% ee) and high yields (up
开发了一种高效且对映选择性 Ir 催化的不饱和砜加氢反应。以优异的对映选择性(高达 98% ee)生产手性环状和无环砜。与 Ramberg-Bäcklund 重排相结合,该反应提供了一种获得具有优异对映选择性(高达 97% ee)和高产率(高达 94%)的手性烯丙基和同型烯丙基化合物的新途径。