Reactions of methyl 3-hydroxythiophene-2-carboxylate. Part 4. Synthesis of methyl 5-azolyl-3-hydroxythiophene-2-carboxylates
1987
The indirect introduction of an azolyl group in position 5 of compound 1 by an easy two-step procedure taking place at room temperature is described. A similar procedure yields the 4-chloro derivatives of these 5-azolyl compounds. The same method is applied for the introduction of a 5-azido group and from the 5-azido compounds, 5-v-triazolyl derivatives are obtained by a known method.
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