DREGVAL G. F.; ROZVAGA R. I., UKR. XIM. ZH. <UKZN-AU>, 1975, 41, HO 8, 854-858
作者:DREGVAL G. F.、 ROZVAGA R. I.
DOI:——
日期:——
Metal-free synthesis of pyridin-2-yl ureas from 2-aminopyridinium salts
作者:Saroj、Om P.S. Patel、Krishnan Rangan、Anil Kumar
DOI:10.1016/j.tetlet.2019.07.030
日期:2019.8
domino approach has been developed for the synthesis of pyridin-2-yl urea derivatives via the reaction of 2-aminopyridinium salts and arylamines. The developed strategy tolerated a wide range of functional groups and afforded pyridin-2-yl ureas in moderate to good yields. The reaction was postulated to involve tandem cyclization, intermolecular nucleophilic addition, ring opening, and demethylation.