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An Efficient Synthesis of Substituted 4-Aryl-3-Cyano-2-Amino Thiophenes by a Stepwise Gewald Reaction
Aminothiophenes bromocrotonitriles substituted aminothiophenes
2010/4/20
The title compounds were efficiently synthesised starting from aryl methyl ketones in 3 steps. Knoevenagel condensation of aryl methyl ketones with malononitrile gave the corresponding crotonitriles (...