| Literature DB >> 29461662 |
Daniele Perrotta1, Ming-Ming Wang1, Jérôme Waser1.
Abstract
The first Lewis acid catalyzed enantioselective ring-opening desymmetrization of a donor-acceptor meso-diaminocyclopropane is reported. The copper(II)-catalyzed Friedel-Crafts alkylation of indoles and one pyrrole with an unprecedented meso-diaminocyclopropane delivered enantioenriched, diastereomerically pure urea products, which are structurally related to natural and synthetic bioactive compounds. The development of a new ligand through the investigation of an underexplored subclass of bis(oxazoline) ligands was essential for achieving high enantioselectivities.Entities:
Keywords: BOX ligands; Lewis acids; desymmetrization; donor-acceptor cyclopropanes; ureas
Year: 2018 PMID: 29461662 DOI: 10.1002/anie.201800494
Source DB: PubMed Journal: Angew Chem Int Ed Engl ISSN: 1433-7851 Impact factor: 15.336