among a range of catalytically relevant enamines. Spin population analysis disclosed that enamine radical cations mainly exhibit the carbon-center free radical feature. Taking experimental and computation data together, a comprehensive picture about the redox property of enamines is presented, which would provide guidance in the development of oxidative enamine catalysis and transformations.
Visible Light Promoted β-C-H Alkylation of β-Ketocarbonyls <i>via</i>
a β-Enaminyl Radical Intermediate
作者:Dehong Wang、Long Zhang、Sanzhong Luo
DOI:10.1002/cjoc.201700785
日期:2018.4
carbonyl activation mode is reported on the basis of photo‐induced single‐electron‐transfer (SET) oxidation of a secondary enamine. The resultant β‐enaminyl radical intermediate was trapped by a wide range of Michael acceptors, producing β‐alkylation products of β‐ketocarbonyls in a highly efficient manner.
Efficient one-pot synthesis of cyclic β-enaminoamides by thermal Wolff rearrangement of cyclic 2-diazo-1,3-dicarbonyls and conversion to uracil derivatives
作者:Pratik Neupane、Xin Li、Jae Hak Jung、Yong Rok Lee、Sung Hong Kim
DOI:10.1016/j.tet.2012.01.060
日期:2012.3
This paper describes simple and efficient approaches for the preparation of β-enaminoamides through thermal Wolff rearrangement of cyclic diazodicarbonyls followed by trapping with various amines. The synthesized β-enaminoamides were readily converted into uracil derivatives.