The condensation of N-methyl-4-iodopyrazolecarboxylic acids with substituted copper acetylides gave derivatives of two new heterocyclic systems, and specifically of 1-oxo-6-methylpyrano[3,4,-c]- and 1-oxo-5,7-dimethylpyrano [3,4-d]pyrazole.
|Number of pages||3|
|Journal||Bulletin of the Academy of Sciences of the USSR Division of Chemical Science|
|Publication status||Published - 1 May 1978|
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