Polyfunctionalization of imidazole via sequential imidazolyl anion formation was written by Carver, David S.;Lindell, Stephen D.;Saville-Stones, Elizabeth A.. And the article was included in Tetrahedron in 1997.Product Details of 15813-09-9 This article mentions the following:
A method for achieving the sequential functionalization of the imidazole ring in the order C-5→C-4→C-2 is described. The chem. proceeds via the regioselective formation of positionally stable imidazolyl anions which react with electrophiles (aldehydes, alkyl halides, azides, formamides, isocyanates) to afford substituted imidazoles in 31-90% yield. In the experiment, the researchers used many compounds, for example, 4,5-Diiodo-1H-imidazole (cas: 15813-09-9Product Details of 15813-09-9).
4,5-Diiodo-1H-imidazole (cas: 15813-09-9) belongs to iodide derivatives. Organoiodine compounds occur widely in organic chemistry, but are relatively rare in nature. The C–I bond is the weakest of the carbon–halogen bonds. These bond strengths correlate with the electronegativity of the halogen, decreasing in the order F > Cl > Br > I.Product Details of 15813-09-9
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com