The condensation of iodo-N-methylpyrazole-4-carboxylic acids with substituted copper acetylides proceeds with the formation of the δ-lactone ring and leads to pyrano[4,3-c]pyrazoles.
|Number of pages||3|
|Journal||Bulletin of the Academy of Sciences of the USSR Division of Chemical Science|
|Publication status||Published - 1 Apr 1981|
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