Iodine(I) and Silver(I) Complexes Incorporating 3-Substituted Pyridines

Abstract
Building upon the first report of a 3-acetaminopyridine-based iodine(I) complex (1b) and its unexpected reactivity toward tBuOMe, several new 3-substituted iodine(I) complexes (2b–5b) have been synthesized. The iodine(I) complexes were synthesized from their analogous silver(I) complexes (2a–5a) via a silver(I) to iodine(I) cation exchange reaction, incorporating functionally related substituents as 3-acetaminopyridine in 1b; 3-acetylpyridine (3-Acpy; 2), 3-aminopyridine (3-NH2py; 3), and 3-dimethylaminopyridine (3-NMe2py; 4), as well as the strongly electron-withdrawing 3-cyanopyridine (3-CNpy; 5), to probe the possible limitations of iodine(I) complex formation. The individual properties of these rare examples of iodine(I) complexes incorporating 3-substituted pyridines are also compared to each other and contrasted to their 4-substituted counterparts which are more prevalent in the literature. While the reactivity of 1b toward etheric solvents could not be reproduced in any of the functionally related analogues synthesized herein, the reactivity of 1b was further expanded to a second etheric solvent. Reaction of bis(3-acetaminopyridine)iodine(I) (1b) and iPr2O gave [3-acetamido-1-(3-iodo-2-methylpentan-2-yl)pyridin-1-ium]PF6 (1d), which demonstrated potentially useful C–C and C–I bond formation under ambient conditions.
Main Authors
Format
Articles Research article
Published
2023
Series
Subjects
Publication in research information system
Publisher
American Chemical Society (ACS)
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-202307034328Use this for linking
Review status
Peer reviewed
ISSN
2470-1343
DOI
https://doi.org/10.1021/acsomega.3c03097
Language
English
Published in
ACS Omega
Citation
License
CC BY 4.0Open Access
Funder(s)
Research Council of Finland
Research Council of Finland
Funding program(s)
Academy Project, AoF
Academy Research Fellow, AoF
Akatemiahanke, SA
Akatemiatutkija, SA
Research Council of Finland
Additional information about funding
The authors gratefully acknowledge the Academy of Finland (K.R. grant no 351121) and the University of Jyväskylä, Finland, for financial support.
Copyright© 2023 The Authors. Published by American Chemical Society

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