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Updated: Jan 12, 2026

Synthesis and Purification of Iodoaziridines Involving Quantitative Selection of the Optimal Stationary Phase for Chromatography
Published on: May 16, 2014
Development of an organosilica material containing ordered triene coordination sites and its application in
Yuki Inagaki1,2, Yoshihiro Shimoyama3, Shinji Tanaka3
1School of Materials and Chemical Technology, Institute of Science Tokyo, Meguro-ku, Tokyo 152-8552, Japan. nakajima.y@cap.mac.titech.ac.jp.
Abstract:
An organosilica material containing conjugated triene moieties (triene-SiO2-TMS; TMS = trimethylsilyl) was developed. The structure of triene-SiO2-TMS was characterized by nitrogen adsorption, X-ray diffraction (XRD), and transmission electron microscopy (TEM) to reveal that triene-SiO2-TMS consists of organosilica particles with a molecular-scale ordered arrangement of conjugated triene moieties on the surface. Treatment of triene-SiO2-TMS with commercially available Pd(dba)2 in THF at ambient temperature afforded Pd-triene-SiO2-TMS, in which Pd was immobilized on the surface. Pd-triene-SiO2-TMS exhibited catalytic activity towards the borylation of aryl iodides with 4,4,5,5-tetramethyl-1,3,2-dioxaborolane (HBpin). The reactions proceeded without the addition of exogenous ligands such as phosphines. The catalyst exhibited good functional group compatibility including electron-withdrawing and -donating functional groups. The recyclability of Pd-triene-SiO2-TMS was examined to demonstrate its moderate reusability.
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