Photoinduced Group Transposition via Iridium‐Nitrenoid Leading to Amidative Inner‐Sphere Aryl Migration
Year: 2024
Type: article
Abstract: We herein report a fundamental mechanistic investigation into photochemical metal-nitrenoid generation and inner-sphere transposition reactivity using organometallic photoprecursors. By designing Cp*Ir(hydroxamate)(Ar) complexes, we induced photo-initiated ligand activation, allowing us to explore the amidative σ(Ir-aryl) migration reactivity. A combination of experimental mechanistic studies, femtosecond transient absorption spectroscopy, and density functional theory (DFT) calculations revealed that the metal-to-ligand charge transfer enables the σ(N-O) cleavage, followed by Ir-acylnitrenoid generation. The final inner-sphere σ(Ir-aryl) group migration results in a net amidative group transposition.
Authors: Hoimin Jung, Jungkweon Choi, Daniel Kim, Jeong Hoon Lee, Hyotcherl Ihee, Dongwook Kim, Sukbok Chang
Language: English
Subfield: Organic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: bronze
Awards: G2970460068, G3148917236, G4370036676
OpenAlex ID: W4399692225