New method for in situ generation of enolate-iminium 1,4-dipoles for [4 + 2] and [4 + 1] dipolar heterocycloaddition reactions

Vladimir E. Zhulanov, Maksim V. Dmitriev, Andrey N. Maslivets, Michael Rubin
2016 RSC Advances  
Thermolysis of N-(diphenylenamino)pyrrolediones proceeds with formation of dihydropyrazolone 1,4-dipoles. [4 + 4] Homodimerizations and a series of [4 + 2] and [4 + 1] cycloadditions of these species with various dipolarophiles were investigated.
doi:10.1039/c6ra21981k fatcat:6scndxeq25drdosnujiqv6hc7a