Reaction of carbon nucleophiles with alkylideneindazolium and alkylideneindolium ions generated from their 3-(1-arylsulfonylalkyl) indazole and indole precursors.
Lewis acid promoted elimination of p-toluenesulfinc acid from sulfonyl indazoles and sulfonyl indoles generates the corresponding iminium ion that reacts with allyltin reagents, silyl enol ethers, silyl ketene acetals and electron-rich aromatics leading to functionalized indazole and indole derivatives.
Marsili
Laura
L
Dipartimento di Scienze Chimiche, Università di Camerino, via S. Agostino, 1, I-62032, Camerino, Italy.
Palmieri
Alessandro
A
Petrini
Marino
M