One-Pot Oxidative Passerini Reaction of Alcohols Using a Magnetically Recyclable TEMPO under Metal- and Halogen-Free Conditions
作者:Babak Karimi、Elham Farhangi
DOI:10.1002/adsc.201200449
日期:2013.2.1
the metal- and halogen-freeaerobic, oxidative, three-component Passerini reaction. To the best of our knowledge this method can be considered as the first example of a OP-3CR of alcohols undermetal- and halogen-free reaction conditions. It should be also noted that there has been no precedent example of oxidative OP-3CR of secondary alcohols to their corresponding α-acyloxy carboxamides. The catalyst
A greener synthesis of α-acyloxyamides was achieved by one-pot three component cascade Passerini reactions in a deep eutectic solvent (DES). Reactions proceeded rapidly and afforded the corresponding α-acyloxyamides by a variety of aldehydes, acids and isocyanides in excellent yields. The DES has the advantages of easy workup, high yield, and an environmentally benign and, moreover, shortened time as the greatest exclusivity of this system compared with previously reported methods. Passerini three-component cascade reaction in a deep eutectic solvent: an environmentally benign and rapid system for the synthesis of α-acyloxyamides.