Amidinato silylene complexes for bond activation and catalysis

• Main Author: Khoo, Sabrina Yee Teng
• Other Authors: So Cheuk Wai
• Format: Theses and Dissertations
• Language: English
• Published: 2019
• Subjects: DRNTU::Science::Chemistry::Inorganic chemistry::Non-metals; DRNTU::Science::Chemistry::Inorganic chemistry::Synthesis
• Online Access: https://hdl.handle.net/10356/103657; http://hdl.handle.net/10220/47433
• Institution: Nanyang Technological University

This thesis primarily describes the development of amidinato silylene complexes for the purposes of bond activation and catalysis. Firstly, a paramagnetic dimeric amidinato cobaltosilylene was demonstrated to catalyze the regioselective C–H functionalization of arylpyridines by alkynes. It can also catalyze Kumada-type cross-coupling reactions. Next, an amidinato silicon(I)–iron(II) dimer was shown to be active in the catalytic hydroboration of carbonyl compounds in the absence of auxiliary reducing agents. A silylene boronium cation then exhibited reversible aliphatic C–H bond activation, the first of its kind. Lastly, an amidinato amidosilylene performed the challenging B–H activation.