Abstract
The diastereoselective synthesis of highly substituted β-lactams by intramolecular Tsuji-Trost allylation is reported. Judicious selection of the ligand on palladium allows selective access to either the trans isomer (in generally good to excellent yield with very high diastereomeric excess) or cis isomer (with yields and diastereoselectivity ranging from modest to excellent depending on the substrate). The reaction proceeds under exceedingly mild conditions (rt, no additives) with a broad range of substrates, which are readily accessible by the Ugi reaction.
| Original language | English |
|---|---|
| Pages (from-to) | 9566-9584 |
| Number of pages | 19 |
| Journal | Journal of Organic Chemistry |
| Volume | 85 |
| Issue number | 15 |
| Early online date | 25 Jun 2020 |
| DOIs | |
| Publication status | Published - 7 Aug 2020 |
Funding
This work was financially supported by the Netherlands Organisation for Scientific Research (NWO). We thank Daniel Preschel for HRMS measurements and Elwin Janssen for the NMR support (both Vrije Universiteit Amsterdam). We thank SURFsara for the use of the Cartesius and Lisa supercomputer. Dr. Christophe Vande Velde (University of Antwerp) is gratefully acknowledged for X-ray crystallographic measurements and solving the structure of cis - 6s . We also thank Prof. Kristof Van Hecke (Ghent University) for providing diffractometer time, and the Hercules Foundation (project AUGE/11/029 “3D-SPACE: 3D Structural Platform Aiming for Chemical Excellence”) for funding of the diffractometer.
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SDG 6 Clean Water and Sanitation
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CCDC 1957914: Experimental Crystal Structure Determination
Faltracco, M. (Contributor), Sukowski, V. (Contributor), van Druenen, M. (Contributor), Hamlin, T. A. (Contributor), Bickelhaupt, F. M. (Contributor) & Ruijter, E. (Contributor), Unknown, 7 Aug 2020
DOI: 10.5517/ccdc.csd.cc23qcjr, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccdc.csd.cc23qcjr&sid=DataCite
Dataset / Software: Dataset
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