Stavber, Stojan et al. published their research in Synlett in 2002 | CAS: 3268-21-1

1,4-Diiodo-2,3,5,6-tetramethylbenzene (cas: 3268-21-1) belongs to iodide derivatives. Typical reactions of alkyl iodides include nucleophilic substitution, elimination, reduction, and the formation of organometallics. Organoiodine lubricants can be used with titanium, stainless steels, and other metals which tend to seize up with conventional lubricants: organoiodine lubricants can be used in turbines and spacecraft, and as a cutting oil in machining.Reference of 3268-21-1

Selective and effective iodination of alkyl-substituted benzenes with elemental iodine activated by selectfluor F-TEDA-BF4 was written by Stavber, Stojan;Kralj, Petra;Zupan, Marko. And the article was included in Synlett in 2002.Reference of 3268-21-1 This article mentions the following:

Selective direct introduction of an I atom into alkyl-substituted benzene derivatives was effectively achieved by reaction of target mols. with elemental I2 in the presence of 1-chloromethyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate) (Selectfluor F-TEDA-BF4). The number of I atoms introduced could be modulated by the molar ratio between substrate, I2 and F-TEDA-BF4. In the experiment, the researchers used many compounds, for example, 1,4-Diiodo-2,3,5,6-tetramethylbenzene (cas: 3268-21-1Reference of 3268-21-1).

1,4-Diiodo-2,3,5,6-tetramethylbenzene (cas: 3268-21-1) belongs to iodide derivatives. Typical reactions of alkyl iodides include nucleophilic substitution, elimination, reduction, and the formation of organometallics. Organoiodine lubricants can be used with titanium, stainless steels, and other metals which tend to seize up with conventional lubricants: organoiodine lubricants can be used in turbines and spacecraft, and as a cutting oil in machining.Reference of 3268-21-1

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