Regio- and Enantioselective Iridium-Catalyzed Allylation of Thiophenol: Synthesis of Enantiopure Allyl Phenyl Sulfides
摘要:
A highly regio- and enantioselective allylic alkylation of sodium thiophenoxide has been realized by [Ir(COD)CI](2)/phosphoramidite along with CsF as an additive, producing highly enantioenriched allyl phenyl sulfide compounds with up to 99% ee.
Enantioselective Allylic Thioetherification: The Effect of Phosphoric Acid Diester on Iridium‐Catalyzed Enantioconvergent Transformations
作者:Markus Roggen、Erick M. Carreira
DOI:10.1002/anie.201202092
日期:2012.8.20
You'll take the high road and I'll take the low road: Enantioenriched allylic thioethers have been synthesized from chiral racemic allylic alcohols. The combination of an Ir–(P,alkene) complex and dibutyl phosphoricacid are required to attain high selectivities. Mechanistic studies uncover an enantioconvergenttransformation in which substrate enantiomers react along different pathways to give the