106762-50-9Relevant articles and documents
Regioselective Functionalization of Pyridinesulfonic Acids. Ortho-Lithiation of Tertiary 2- and 4-Pyridinesulfonamides
Marsais, F.,Cronnier, A.,Trecourt, F.,Queguiner, G.
, p. 1133 - 1136 (2007/10/02)
Tertiary 2- and 4-pyridinesulfonamides were ortho-lithiated at low temperature by an excess of lithium diisopropylamide.Proton abstraction occurs selectively at the more acid 3-positions in the two cases. 3-Lithio-2- and -4-(piperidinosulfonyl)pyridines r