Copper-catalyzed oxidative cleavage of Passerini and Ugi adducts in basic medium yielding α-ketoamides
作者:Anirban Ghoshal、Mayur D. Ambule、Revoju Sravanthi、Mohit Taneja、Ajay Kumar Srivastava
DOI:10.1039/c9nj03533h
日期:——
oxidative cleavage of Passerini and Ugi adducts in the presence of base and copper(I) iodide is studied in detail. The oxidative cleavage yields α-ketoamides along with acids and amides from Passerini and Ugi adducts respectively. Mechanistic investigations revealed that the reaction proceeds via a radical pathway involving molecular oxygen. Control experiments with 18O-labeled Passerini adducts confirmed
A new modification of the Passerini reaction: a one-pot synthesis of α-acyloxyamides via sequential Kornblum oxidation/Passerini reaction
作者:Mehdi Adib、Ehsan Sheikhi、Marjan Azimzadeh
DOI:10.1016/j.tetlet.2015.02.007
日期:2015.4
A novel approach for the synthesis of alpha-acyloxyamides is described. Benzylic substrates (halides or tosylates), under mild Kornblum conditions, are oxidized to give the corresponding aldehydes, which undergo a Passerini reaction with carboxylic acids and isocyanides to produce the corresponding alpha-acyloxyamides in excellent yields. (C) 2015 Elsevier Ltd. All rights reserved.
Kobayashi Tomoshige, Minemura Hidefumi, Kato Hiroshi, Heterocycles, 40 (1995) N 1, S 311-317