Synthesis of 6-Substituted Piperidin-3-ones via Rh(II)-Catalyzed Transannulation of <i>N</i>-Sulfonyl-1,2,3-triazoles with Electron-Rich Aromatic Nucleophiles
作者:Yang Li、Ran Zhang、Arshad Ali、Jing Zhang、Xihe Bi、Junkai Fu
DOI:10.1021/acs.orglett.7b01180
日期:2017.6.16
A highly diastereoselective rhodium(II)-catalyzed transannulation of aldehyde-tethered N-sulfonyl triazoles with electron-rich aromatic nucleophiles is reported for the first time to afford functionalized 6-substituted piperidin-3-ones. The reaction has a broad substrate scope including both aliphatic and aromatic N-sulfonyl-1,2,3-triazoles together with various aromatic nucleophiles. The addition
首次报道了高度非对映选择性的铑(II)催化的醛基化N-磺酰基三唑与富电子芳族亲核试剂的转环反应,提供了功能化的6-取代的哌啶-3-酮。该反应具有广泛的底物范围,包括脂族和芳族N-磺酰基-1,2,3-三唑以及各种芳族亲核试剂。已证明添加催化量的路易斯酸对于提高产率至关重要。通过采用这种方法,可以获得带有季碳的几乎不易获得的哌啶-3-酮。