T. Murashima, Ryuji Tamai, K. Fujita
Nov 11, 1996
Citations
0
Influential Citations
16
Citations
Journal
Tetrahedron Letters
Abstract
Two classes of nitro heteroaromatic compounds such as quinoxalines 7a,b and benzothiaselenadiazoles 7c,d with ethyl isocyanoacetate in the presence of 1,8-diazabicyclo[5,4,0]undec-7-ene g gave the corresponding pyrimidine N-oxides 8a-d, whilst, in contrast, use of proazaphosphatrane 2 or iminophosphorane 4 as a base under similar conditions gave the corresponding pyrroles 9a-d.