Iwanek W. New insights into the reactivity of aminomethylene derivatives of resorc[4]arene: amine group transfer, conformational analysis, reaction mechanism.
RSC Adv 2022;
12:27370-27379. [PMID:
36276037 PMCID:
PMC9513681 DOI:
10.1039/d2ra04610e]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Accepted: 09/09/2022] [Indexed: 12/05/2022] Open
Abstract
Using the example of aminomethylene derivatives of resorc[4]arene and their Michael reaction with 4-hydroxycoumarin, the possibility of transferring an amine molecule from substrate to product is demonstrated. The conformation of the aminocoumarin derivatives of resorc[4]arene formed is controlled by the polarity of the solvent. For one of the products, conformational analysis was performed by kinetic sampling using metadynamics (MTD). The energies of the final set of conformers were calculated by DFT (r2scan-3c). A reaction mechanism based on multiscale (ONIOM) Nudged Elastic Band (NEB-TS) reaction profile calculations is discussed.
Using the example of aminomethylene derivatives of resorc[4]arene and their Michael reaction with 4-hydroxycoumarin, the possibility of transferring an amine molecule from substrate to product is demonstrated.![]()
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