SEARCH Articles Figures Tables 3 -Methylpyrazole 3 -methylpyrazoles 3-Iodo-1 -methylpyrazole-4-carboxylic acid 4- Iodo-l-methylpyrazole-5 -carboxylic 5- Methylpyrazole-3-carboxylic acid Copper-carboxylate Cyclocondensation Iodo- copper With Copper