Stereoselective Copper-Catalyzed Intramolecular Alkene Aminooxygenation: Effects of Substrate and Ligand Structure on Selectivity
作者:Monissa C. Paderes、Sherry R. Chemler
DOI:10.1002/ejoc.201100444
日期:2011.7
A new protocol for diastereoselective copper-catalyzed intra-molecular alkene aminooxygenation, which provides methyleneoxy-functionalized disubstituted pyrrolidines and five-membered cyclic ureas from the corresponding γ-alkenyl sulfonamides and N-allylureas, is reported. In addition, some success was achieved in enantioselective desymmetrizations reactions. We discovered that the level of enantioselectivity
报道了一种非对映选择性铜催化分子内烯烃氨基氧化的新方案,该方案从相应的 γ-烯基磺酰胺和 N-烯丙基脲中提供亚甲氧基官能化的二取代吡咯烷和五元环脲。此外,对映选择性去对称化反应也取得了一些成功。我们发现对映选择性和非对映选择性的水平可以通过选择铜 (II) 配体和底物 N 取代基来调节。
Direct Synthesis of 2-Formylpyrrolidines, 2-Pyrrolidinones and 2-Dihydrofuranones via Aerobic Copper-Catalyzed Aminooxygenation and Dioxygenation of 4-Pentenylsulfonamides and 4-Pentenylalcohols
作者:Tomasz Wdowik、Sherry R. Chemler
DOI:10.1021/jacs.7b05680
日期:2017.7.19
and a 2-ketopyrrolidine has been developed. This transformation occurs via aerobic copper-catalyzed alkene aminooxygenation where molecular oxygen serves as both oxidant and oxygen source. The 2-formylpyrrolidines can further undergo oxidative carbon-carbon bond cleavage in situ upon addition of DABCO, providing 2-pyrrolidinones. These transformations have been demonstrated for a range of 4-pentenylsulfonamides
Diastereoselective Pyrrolidine Synthesis via Copper Promoted Intramolecular Aminooxygenation of Alkenes: Formal Synthesis of (+)-Monomorine
作者:Monissa C. Paderes、Sherry R. Chemler
DOI:10.1021/ol9003492
日期:2009.5.7
substrate whose N-substituent was directly tethered to the α-carbon exclusively yielded the 2,5-trans pyrrolidine. The synthetic utility of the method was demonstrated by a short and efficient formal synthesis of (+)-monomorine.