See, Jie Yang; Yang, Hui; Zhao, Yu; Wong, Ming Wah; Ke, Zhihai; Yeung, Ying-Yeung published an article on February 2 ,2018. The article was titled 《Desymmetrizing Enantio- and Diastereoselective Selenoetherification through Supramolecular Catalysis》, and you may find the article in ACS Catalysis.Computed Properties of C24H20I2O4 The information in the text is summarized as follows:
Selenofunctionalization is used for the introduction of aryl- or alkylseleno moieties, which can then be transformed into other functional groups (such as alkenes and carbonyls). However, asym. selenofunctionalization of unactivated olefins is often difficult to realize as aryl- and alkylseleno cations rapidly interchange between olefinic partners. Recently, it has been demonstrated that Lewis bases, assisted by Bronsted acids, induce high levels of enantioselectivity in selenocyclization reactions. The Bronsted acid serves as an activator for the reaction. In this work, we demonstrate an asym. selenoetherification and desymmetrization of olefinic 1,3-diols, driven by a unique chiral pairing between a C2-sym. cyclic selenide catalyst and a chiral Bronsted acid. The resulting substituted tetrahydrofurans I (R = Ph, 3-ClC6H4, 4-ClC6H4, 3-MeC6H4, etc.) contain a phenylselenoether handle, and can be transformed into synthetically useful building blocks. A series of exptl. and computational investigations suggest that the reaction proceeds via a supramol. catalytic pathway.(R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene(cas: 189518-78-3Computed Properties of C24H20I2O4) was used in this study.
(R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene(cas: 189518-78-3) belongs to organic iodides.Computed Properties of C24H20I2O4 The carbon-iodine bond is weaker than other carbon-halogen bonds due to the poor electronegative nature of the iodine atom. In general, organic iodides are light-sensitive and turn yellow during storage, owing to the formation of iodine.
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com