Direct iodination of 3- and 4-nitropyrazoles with a reagent based on iodine monochloride and silver sulfate
作者:V. K. Chaikovskii、T. S. Kharlova、E. V. Tretyakov、S. F. Vasilevsky、V. D. Filimonov
DOI:10.1007/bf02495102
日期:2000.8
The reagent obtained from iodine monochloride and silver sulfate in sulfuric acid easily iodinates 1-methyl-3-nitropyrazole under mild conditions to give 4-iodo or 4,5-diiodo derivatives. 1-Methyl-4-nitropyrazole was also directly iodinated with this reagent for the first time.