Synthesis of β-Aminoketones and Construction of Highly Substituted 4-Piperidones by Mannich Reaction Induced by Persistent Radical Cation Salts
作者:Xiao-Dong Jia、Xiao-E Wang、Cai-Xia Yang、Cong-De Huo、Wen-Juan Wang、Yan Ren、Xi-Cun Wang
DOI:10.1021/ol9027978
日期:2010.2.19
A Mannich reaction of imines and ketones induced by persistent radical cation salts was investigated, and a series of Mannich bases, β-aminoketones, were synthesized. A novel cyclization to form the 4-piperidone skeleton was achieved in a tandem process. The reaction can be rationalized as a radical cation process supported by various evidence.