Copper-Catalyzed Aerobic Oxidation of Hydroxamic Acids Leads to a Mild and Versatile Acylnitroso Ene Reaction
作者:Charles P. Frazier、Jarred R. Engelking、Javier Read de Alaniz
DOI:10.1021/ja204603u
日期:2011.7.13
A mild formation of transient acylnitroso intermediates using a copper chloride catalyst and 1 atm of air as the terminal oxidant is described. The mild reaction conditions enable the inter- and intramolecular acylnitroso ene reaction with a wide range of functionalized alkene partners, as well as the first asymmetric variant. Notably, this transformation provides a practical and operationally simple method for effecting allylic amidation using an environmentally benign oxidant and a readily abundant transition metal.
Organic Dye-Photocatalyzed Acylnitroso Ene Reaction
作者:Yew Chin Teo、Yuanhang Pan、Choon Hong Tan
DOI:10.1002/cctc.201200435
日期:2013.1
operationally simple and uses air as the terminal oxidant. Reactions of acylnitroso with a range of functionalized alkenes give intermolecular acylnitroso ene products in moderate to good yields. This is an environmentally friendly allylicamination methodology that avoids the use of metal catalysts and stoichiometric amount of oxidants. A plausible reaction mechanism is proposed on the basis of singlet oxygen