Highly Regioselective Aromatic C–H Allylation of <i>N</i>-(Arylmethyl)sulfonimides with Allyl Grignard Reagents Involving Benzylic C–N Cleavage
作者:Meng-Zeng Zhu、Dong Xie、Shi-Kai Tian
DOI:10.1021/acs.orglett.1c02437
日期:2021.9.3
C–H functionalization of benzyl electrophiles with nucleophiles via palladium-catalyzed benzylic C–N cleavage. A range of N-(1-naphthylmethyl)sulfonimides, N-(2-thienylmethyl)sulfonimides, and N-(2-furanylmethyl)sulfonimides smoothly underwent palladium-catalyzed aromatic C–H allylation with allyl Grignard reagents at roomtemperature, delivering structurally diverse substituted 1-allylnaphthalenes and
A mild and efficient protocol is developed to convert simple aromatic substrates into value-added and structurally complex bridged benzazepines via a photocatalytic dearomatization. The switchable diastereoselectivity could be furnished by the manipulation of base-promoted or photoinduced intramolecularhydroamination.