palladium/chiral norbornene cooperative catalysis. The obtained C–N axialchirality originates from the preformed transient C–C axialchirality with high fidelity. A variety of C–N axiallychiral phenanthridinones are obtained in excellent enantioselectivities (44 examples, up to >99% ee). This method can be applied for the construction of two stereogenic axes via double atroposelective C–H arylation
Exploiting the Bis-Nucleophilicity of α-Aminoboronates: Copper-Catalyzed, Intramolecular Aminoalkylations of Bromobenzoyl Chlorides
作者:Aaron M. Dumas、Adrian J. Sieradzki、Liam J. Donnelly
DOI:10.1021/acs.orglett.6b00586
日期:2016.4.15
containing adjacent nucleophilic centers. We have developed an acylation/arylation reaction using 2-bromobenzoyl chlorides as bis-electrophiles that harnesses the nucleophilicity of both positions, leading to isoindolinones. The reactions proceed under mild conditions via an intramolecular, Cu-catalyzed sp3–sp2 coupling, giving products in up to 95% yield. These conditions enable arylation of α,α-disubstituted