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
Dimethyl Phosphite Mediated Hydrogen Atom Abstraction: A Tin-Free Procedure for the Preparation of Cyclopentane Derivatives
作者:Florent Beaufils、Fabrice Dénès、Philippe Renaud
DOI:10.1002/anie.200501309
日期:2005.8.19
Inter- and Intramolecular Addition/Cyclizations of Sulfonamide Anions with Alkynyliodonium Triflates. Synthesis of Dihydropyrrole, Pyrrole, Indole, and Tosylenamide Heterocycles
作者:Ken S. Feldman、Michelle M. Bruendl、Klaas Schildknegt、Adolph C. Bohnstedt
DOI:10.1021/jo9605814
日期:1996.1.1
The synthesis of dihydropyrroles, pyrroles, and indoles through [3-atom $ 2-atom] combination of ethyl or aryl tosylamide anions with phenyl(propynyl)iodonium triflate, and the base-mediated intramolecular bicyclization of alkynyliodonium-bearing tosylamide or tosylimide substrates to furnish bicyclic and tricyclic tosylenamide (-enimide) products, is described. A detailed discussion of the scope, limitations, byproduct formation, and the basis for observed diastereoselectivity is presented.