904927-17-9Relevant articles and documents
Oxidative addition of N-aminophthalimide to alkenyl-4,5-dihydropyrazoles and alkenylpyrazoles. Synthesis of aziridinylpyrazoles
Ignatenko,Blandov,Kuznetsov
, p. 1793 - 1801 (2005)
Oxidation of N-aminophthalimide with lead tetraacetate in the presence of 1,5-diaryl-3-[(E)-2-arylethenyl]-1H-pyrazoles, as well as of 1,3-diphenyl-5-[(E)-2-phenylethenyl]-1H-pyrazole, gives adducts at the exocyclic C=C bond, the corresponding phthalimidoaziridinylpyrazoles. From 1,5-diphenyl-3-[(1E,3E)-4-phenyl-1,3-butadienyl]-1H-pyrazole, only product of addition at both exocyclic C=C bonds was obtained. In the reaction with 1-phenyl-3-[(1E,3E)-4-phenyl-1,3-butadienyl]-5-[(E)-2-phenylethenyl] -1H-pyrazole, the adduct at the styryl C=C bond was isolated. Analogous 4,5-dihydropyrazoles, 1,5-diphenyl-3-[(1E,3E)-4-phenyl-1,3-butadienyl]-4,5- dihydro-1H-pyrazole and 1-phenyl-3-[(1E,3E)-4-phenyl-1,3-butadienyl]-5-[(E)-2- phenylethenyl]-4,5-dihydro-1H-pyrazole, turned out to be inert in oxidative addition of N-aminophthalimide.
