One-pot C–C, C–N, and C–S bond construction for synthesis of 3-sulfenylindoles directly from unactivated anilines involving dual palladium catalysis and mechanistic insights from DFT
作者:Sumit K. Rastogi、Richa Singh、Santosh Kumar、Abhishek Kumar Mishra、Mini Bharati Ahirwar、Milind M. Deshmukh、Arun K. Sinha、Ravindra Kumar
DOI:10.1039/d2ob01606k
日期:——
An efficient dual Pd-catalytic system was developed for one-pot synthesis of 3-sulfenylindoles via C–C, C–N and C–S bond construction directly from unactivated 2-iodo(NH)anilines under mild reaction conditions. Furthermore, 3-selenyl/halo/carbon-functionalized indoles were synthesized in good yields and a short reaction time. The synthetic utility of 3-sulfenylindole was also demonstrated. The key
Friedel–Crafts Alkylation of Indoles with Aldehydes/Ketones Catalyzed by Bromodiarylethene-Based Photoacid Generators
作者:Valerii Z. Shirinian、Alexey V. Zakharov、Sofia M. Timofeeva
DOI:10.1055/a-2270-3973
日期:2024.7
Diarylethenes (DAEs) with a bromine atom at the ring-closing position catalyze C–C bonding reactions induced by UV or sunlight. Upon photo-irradiation, bromodiarylethenes undergo 6π-electrocyclization (6π-EC), followed by the release of an acid species that catalyzes the double Friedel–Crafts addition of indoles to aldehydes and isatins to form the corresponding triarylmethanes and 3,3′-diarylindolin-2-ones