Solvent free aza-annulation using 4-dime
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Stephane Jouneau; Jean Pierre Bazureau
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Article
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1999
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Elsevier Science
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French
β 126 KB
4-Dimethylamino 2-aza-l,3-diene~ 2a,b derived respectively from methyl N-(Iethoxyethyliden)glycinate la and methyl N-[bis-(methylthio)methylene]glycinate lb react with hydrazines 3a,b and amines 3e,d to give the corresponding new imidazole-4-carboxylates 5(a-f) by a solvent-free aza-annulation.