1,3-Dipolar cycloaddition of arynes with azomethine imines: synthesis of 1,2-dihydropyrazolo[1,2-a]indazol-3(9H)-ones.
A [3+2] 1,3-dipolar cycloaddition reaction of arynes with stable azomethine imines has been developed. The reaction rapidly assembles tricyclic pyrazoloindazolone derivatives in moderate yields under mild reaction conditions.
Shi
Feng
F
Department of Chemistry, Iowa State University, Ames, IA 50011, USA.
Mancuso
Raffaella
R
Larock
Richard C
RC