Tandem Photochemical Synthesis of N-Amino β-Lactams from Pyrazolidin-3-ones

Article abstract of DOI:10.1021/jo00311a023

Substituted pyrazolidin-3-ones 8 - 13 were prepared by condensation of hydrazine hydrate with α,β-unsaturated carboxylic acids or esters and were converted to 1-(o-nitrobenzyl) derivatives 22 - 26.Acylation of these heterocycles afforded 1-(o-nitrobenzyl)