Formamide as a superior nitrogen nucleophile in palladium(II) mediated synthesis of imidazolidines
作者:Rolf A.T.M. van Benthem、Henk Hiemstra、Gema Rodríguez Longarela、W.Nico Speckamp
DOI:10.1016/0040-4039(94)88488-9
日期:1994.12
Formamides emerge as superiornitrogennucleophiles in palladium(II) catalyzed oxidative 5-exo cyclizations of formaldehyde aminals derived from N-Boc protected allylic amines. The product imidazolidines are readily transformed into protected vicinal diamines.