Palladium-catalyzed inter- and intramolecular hydroamination of styrenes coupled with alcohol oxidation using N-fluorobenzenesulfonimide as the oxidant
摘要:
Palladium-catalyzed inter- and intramolecular hydroaminations of styrenes that are coupled to alcohol oxidation under oxidative condition are reported. The fluorination reagent NFSI is used as the nitrogen source as well as the oxidant. Bidental nitrogen ligand bathocuproine plays a crucial role in this transformation. (C) 2010 Elsevier B.V. All rights reserved.
Brønsted Acid-Catalyzed Intramolecular Hydroamination of Protected Alkenylamines. Synthesis of Pyrrolidines and Piperidines
摘要:
[GRAPHIC]The cyclization of aminoalkenes bearing an electron-withdrawing group on the nitrogen atom was catalyzed by triflic or sulfuric acid in toluene. Pyrrolidines and piperidines were formed in excellent yields. N-Phenylanilides also underwent cyclization to form gamma-lactams.