One-step preparation of novel 1-(: N -indolyl)-1,3-butadienes by base-catalysed isomerization of alkynes as an access to 5-(N -indolyl)-naphthoquinones

por Pis Diez, C.M., Fernandez, J.F., Di Venosa, G., Casas, A., Pis Diez, R., Palermo, J.A.