Henklein, Peter et al. published their research in Zeitschrift fuer Chemie in 1989 | CAS: 15366-65-1

5-Iodonicotinic acid (cas: 15366-65-1) belongs to iodide derivatives. Organoiodine compounds occur widely in organic chemistry, but are relatively rare in nature. Alkyl iodides react at a faster rate than alkyl fluorides due to the weak C-I bond.Electric Literature of C6H4INO2

Synthesis of carboxylic acid N-hydroxynorborn-5-ene-2,3-dicarboximide esters was written by Henklein, Peter;Ott, Tilmann;Jaehrling, Renate;Scharfenberg, Peter;Heyne, Hans Ulrich;Niedrich, Hartmut. And the article was included in Zeitschrift fuer Chemie in 1989.Electric Literature of C6H4INO2 This article mentions the following:

A one pot preparation of title compounds R1CO2R (R1 = e.g., Ph, naphthyl, adamantyl) is described. Thus condensation reaction of ClCO2R with arylcarboxylic or amino acids, R1CO2H, in CH2Cl2, THF, or THF-dioxane (1:1) in the presence of N-methylmorpholine using 4-(dimethylamino)pyridine as catalyst gave R1CO2CO2R, which is unstable and loses CO2 to give 64-87% R1CO2R. In the experiment, the researchers used many compounds, for example, 5-Iodonicotinic acid (cas: 15366-65-1Electric Literature of C6H4INO2).

5-Iodonicotinic acid (cas: 15366-65-1) belongs to iodide derivatives. Organoiodine compounds occur widely in organic chemistry, but are relatively rare in nature. Alkyl iodides react at a faster rate than alkyl fluorides due to the weak C-I bond.Electric Literature of C6H4INO2

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com