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Pd(II)-Catalyzed Enantioselective C(sp3)-H Arylation of Cyclopropanes and Cyclobutanes Guided by Tertiary Alkylamines.
| Content Provider | Europe PMC |
|---|---|
| Author | Rodrigalvarez, Jesus Reeve, Luke A. Miró, Javier Gaunt, Matthew J. |
| Copyright Year | 2022 |
| Abstract | Strained aminomethyl-cycloalkanesare a recurrent scaffold in medicinalchemistry due to their unique structural features that give rise toa range of biological properties. Here, we report a palladium-catalyzedenantioselective C(sp3)–H arylation of aminomethyl-cyclopropanesand -cyclobutanes with aryl boronic acids. A range of native tertiaryalkylamine groups are able to direct C–H cleavage and forgecarbon-aryl bonds on the strained cycloalkanes framework as singlediastereomers and with excellent enantiomeric ratios. Central to thesuccess of this strategy is the use of a simple N-acetyl amino acid ligand, which not only controls the enantioselectivitybut also promotes γ-C–H activation of over other pathways.Computational analysis of the cyclopalladation step provides an understandingof how enantioselective C–H cleavage occurs and revealed distincttransition structures to our previous work on enantioselective desymmetrizationof N-isobutyl tertiary alkylamines. This straightforwardand operationally simple method simplifies the construction of functionalizedaminomethyl-strained cycloalkanes, which we believe will find widespreaduse in academic and industrial settings relating to the synthesisof biologically active small molecules. |
| ISSN | 00027863 |
| Volume Number | 144 |
| PubMed Central reference number | PMC9097487 |
| Issue Number | 9 |
| PubMed reference number | 35212219 |
| Journal | Journal of the American Chemical Society [J. Am. Chem. Soc] |
| e-ISSN | 15205126 |
| DOI | 10.1021/jacs.1c11921 |
| Language | English |
| Publisher | American Chemical Society |
| Publisher Date | 2022-02-25 |
| Access Restriction | Open |
| Rights License | Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). © 2022 American Chemical Society |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Colloid and Surface Chemistry Biochemistry Catalysis |