Hypervalent Chalcogenonium…π Bonding Catalysis was written by Zhang, Qingyu;Chan, Yung-Yin;Zhang, Muyin;Yeung, Ying-Yeung;Ke, Zhihai. And the article was included in Angewandte Chemie, International Edition in 2022.SDS of cas: 128-08-5 This article mentions the following:
A proof-of-concept study of hypervalent chalcogenonium…π bonding catalysis was performed. A new catalytic strategy using 1,2-oxaselenolium salts as chalcogen bond donors and alkenes as chalcogen bond acceptors is described. The feasibility of this concept is demonstrated by the use of trisubstituted selenonium salts in the metal-free catalytic hydrofunctionalization and polymerization of alkenes via unconventional seleniranium ion-like intermediates. The results indicate that counter anions have a significant effect on the catalysis based on hypervalent chalcogenonium…π bonding interactions. In the experiment, the researchers used many compounds, for example, 1-Bromopyrrolidine-2,5-dione (cas: 128-08-5SDS of cas: 128-08-5).
1-Bromopyrrolidine-2,5-dione (cas: 128-08-5) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbonbromine bond is electrophilic in nature. The principal reactions for organobromides include dehydrobromination, Grignard reactions, reductive coupling, and nucleophilic substitution.SDS of cas: 128-08-5
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary