745074-70-8Relevant articles and documents
Stereoselective, temperature-dependent [2+2] cycloaddition of N,N-dialkylhydrazones to N-benzyl-N-(benzyloxycarbonyl)aminoketene
Marques-Lopez, Eugenia,Martin-Zamora, Eloisa,Diez, Elena,Fernandez, Rosario,Lassaletta, Jose M.
experimental part, p. 2960 - 2972 (2009/04/06)
The Staudinger-like [2+2] cycloaddition of aliphatic hydrazones derived from (2R,5R)-1-amino-2,5-dimethylpyrrolidine to N-benzyl-N-(benzyloxycarbonyl) aminoketene takes place to afford the corresponding β-lactams in good yields when iPr2EtN is