Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Mesitylcopper(I), is researched, Molecular C9H11Cu, CAS is 75732-01-3, about Facile assembly of a Cu9 amido complex: a new tripodal ligand design that promotes transition metal cluster formation.Reference of Mesitylcopper(I).
A tripodal amido ligand, [P(CH2NArCF3)3]H3 (ArCF3 = C6H3-3,5-(CF3)2), with a central non-chelating phosphorus donor allows for the facile assembly of a pentane soluble organometallic copper cluster, [P(CH2NArCF3)3]2Cu9(μ-2,4,6-Me3C6H2)3, with a central copper atom surrounded by a nonplanar chain of eight copper atoms and two terminal amido-copper bonds.
After consulting a lot of data, we found that this compound(75732-01-3)Reference of Mesitylcopper(I) can be used in many types of reactions. And in most cases, this compound has more advantages.
Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com