2,2-Di(ethoxy)vinyllithium: A synthetic equivalent of the ethyl acetate anion

Article abstract of DOI:10.1016/0040-4039(96)00416-9

2,2-Diethoxyvinyllithium can be readily generated from 2-bromo-1,1,-diethoxyethylene by treatment with butyllithium. When dissolved in tetrahydrofuran, it can be stored at -25°C for hours, but decomposes rapidly at 0°C.