N. Ono, T. Murashima, Keiji Nishi
Nov 22, 2002
Citations
0
Influential Citations
13
Citations
Journal
Heterocycles
Abstract
The reaction of nitropyridine derivatives with ethyl isocyanoacetate in the presence of 1,8-diazabicydo[5.4.0]undecene proceeded tandem cyclization to give polycyclic pyrrolopyridines or imidazopyridines. On the other hand, N-protected 3-nitro- and 5-nitropyridones and N,N-diprotected 5-nitrouracil gave corresponding bicyclic pyrroles in good yields under the similar conditions.