NMR Studies of Five-Coordinate Tin Enolate: An Efficient Reagent for Halo Selective Reaction toward α-Halo Ketone or α-Halo Imine

Article abstract of DOI:10.1021/jo00095a011

NMR studies of tin enolates 1, in the presence of HMPA, revealed the presence of a five-coordinate O-stannyl enolate 1(h) which contributes to upfield shifts of Sn peaks in the 119Sn NMR spectrum and increased coupling constants J(119Sn-13C), compared wit