作者:Nataraj Poomathi、Ravichandran Balaji、Narayanan Uma Maheswari、Narayanasamy Mathivanan、Paramasivan T. Perumal、Kalpattu K. Balasubramanian、Veluchamy Amutha Barathi、Seeram Ramakrishna
DOI:10.1039/c8nj02276c
日期:——
A facile atom economic and ecofriendly protocol for the synthesis of biologically important quaternary centered C-3 functionalized oxindole derivatives, with a novel nucleus, in high yields has been demonstrated by employing 3-hydroxy-2-oxindole, isoxazolone/pyrazolone and environmentally benevolent p-toluene sulphonic acid as a catalyst. The advantages of this protocol are the wide substrate scope
BERGMAN J.; EKLUND N., TETRAHEDRON, 1980, 36, NO 10, 1445-1450
作者:BERGMAN J.、 EKLUND N.
DOI:——
日期:——
Synthesis and studies of tris-indolobenzenes and related compounds
作者:Jan Bergman、Nils Eklund
DOI:10.1016/0040-4020(80)85060-5
日期:1980.1
The unsymmetrical N,N,N-trimethyl tris-indolobenzene 3 has been synthesized by several routes, including cyclotrimerization of the O-acetate of indoxyl. This condensation involves a 3→2 rearrangement of the precursor formed in situ. Similar Wagner-Meerwein rearrangements were also prevalent in LAH reductions of some 3,3-diindolyl oxindoles.