Chauhan, Dinesh Pratapsinh; Varma, Sreejith Jayasree; GUDEM, MAHESH; Panigrahi, Nihar; Singh, Khushboo; HAZRA, ANIRBAN; TALUKDAR, PINAKI
(Royal Society of Chemistry, 2017-05)
Copper-catalyzed reaction of enynamines with sulfonylazides provides acyclic and cyclic amidines. Nucleophilic addition of the tethered amino group on the in situ generated ketenimine forms a six-membered cyclic zwitterionic ...