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Chen, Ze-Le ; Empel, Claire ; Wang, Kun ; Wu, Pan-Pan ; Cai, Bao-Gui ; Li, Lei ; Koenigs, Rene M. ; Xuan, Jun:
Enabling Cyclopropanation Reactions of Imidazole Heterocycles via Chemoselective Photochemical Carbene Transfer Reactions of NHC-Boranes.
In: Organic Letters.
Bd. 24
(2022)
.
- S. 2232-2237.
ISSN 1523-7052
DOI: https://doi.org/10.1021/acs.orglett.2c00609
Abstract
Herein we report a site-selective cyclopropanation of N-heterocyclic carbene (NHC)-borane complexes via photochemical carbene transfer reactions. By subtle changes to the reaction conditions, this approach can be further extended toward the difunctionalization of NHC-boranes via cyclopropanation and the B–H insertion reaction. Further investigations in photochemical continuous-flow applications and synthetic transformations proved the utility of the method. Theoretical calculations and control experiments were performed to explain the observed selectivity.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie |
| Titel an der UBT entstanden: | Nein |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Eingestellt am: | 01 Apr 2025 08:42 |
| Letzte Änderung: | 01 Apr 2025 08:42 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/93098 |