Tetrahedron Letters p. 8097 - 8098 (1999)
Update date:2022-09-26
Topics:
Jouneau, Stephane
Bazureau, Jean Pierre
4-Dimethylamino 2-aza-1,3-dienes 2a,b derived respectively from methyl N-(1-ethoxyethyliden)glycinate 1a and methyl N-[bis-(methylthio)methylene]glycinate 1b react with hydrazines 3a,b and amines 3c,d to give the corresponding new imidazole-4-carboxylates 5(a-f) by a solvent-free aza-annulation.
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