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 phosphoric acid are required to attain high selectivities. Mechanistic studies uncover an enantioconvergent transformation in which substrate enantiomers react along different pathways to give the
你会走高端路线,我会走低价路线:对映体富集烯丙基硫醚已经从手性外消旋烯丙基醇合成。一个IR-(P,烯烃)复合物和二丁基磷酸的组合是必需的以获得高选择性。机理研究揭示了对映体会聚转化,其中底物对映异构体沿不同途径反应生成相同的产物(参见方案; cod = 1,5-环辛二烯)。