Direct lithiation of functionally substituted acrylic acid derivatives
作者:R.R. Schmidt、R. Hirsenkorn
DOI:10.1016/s0040-4020(01)91922-2
日期:1983.1
butenolides, tetronates, cyclopentenones and derivatives, which are portions of many natural products. A wide variety of α- and β-substituents are compatible with this lithiation: alkyl-, aryl- and electron donating substituents in α-position or for instance an electron withdrawing ester group in β-position. Lithiation of aminomethylene malonitrile derivative 17 led to a new azafulvene 18.