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Organocatalytic nitrenoid transfer: metal-free selective intermolecular C(sp3)–H amination catalyzed by an iminium salt† †Electronic supplementary information (ESI) available: Experimental procedures, characterization data for all new products, copies of NMR spectra. See DOI: 10.1039/c7sc03968a
| Content Provider | Semantic Scholar |
|---|---|
| Author | Combee, Logan A. Raya, Balaram Wang, Daoyong Hilinski, Michael K. |
| Copyright Year | 2018 |
| Abstract | This report details the first organocatalytic method for nitrenoid transfer and its application to intermolecular, site-selective C(sp3)-H amination. The method utilizes a trifluoromethyl iminium salt as the catalyst, iminoiodinanes as the nitrogen source, and substrate as the limiting reagent. Activated, benzylic, and aliphatic substrates can all be selectively functionalized in yields up to 87%. A mechanistic proposal for the observed reactivity supported by experimental evidence invokes the intermediacy of a diaziridinium salt or related organic nitrenoid, species that have not been previously explored for the purpose of C-H amination. Finally, examples of late-stage functionalization of complex molecules highlight the selectivity and potential utility of this catalytic method in synthesis. |
| Starting Page | 935 |
| Ending Page | 939 |
| Page Count | 5 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://pubs.rsc.org/en/content/articlepdf/2018/sc/c7sc03968a |
| PubMed reference number | 29629160v1 |
| Alternate Webpage(s) | https://doi.org/10.1039/c7sc03968a |
| DOI | 10.1039/c7sc03968a |
| Journal | Chemical science |
| Volume Number | 9 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
