C–H Functionalization of Heteroarenes Using Unactivated Alkyl Halides through Visible-Light Photoredox Catalysis under Basic Conditions
作者:Noah B. Bissonnette、Michael J. Boyd、Gregory D. May、Simon Giroux、Philippe Nuhant
DOI:10.1021/acs.joc.8b01589
日期:2018.9.21
C–H functionalization of electron-deficient heteroarenes using commercial unactivated alkyl halides through reductive quenching photoredoxcatalysis was developed. Mainstream approaches rely on the use of an excess of strong acids that result in regioselectivities dictated by the innate effect of the protonated heteroarene, leaving the functionalization of other carbons unexplored. We report a mild
Palladium-Catalyzed Difunctionalization of Alkynes via C–N and S–N Cleavages: A Versatile Approach to Highly Functional Indoles
作者:Fei Zhao、Dengyou Zhang、Yong Nian、Lei Zhang、Wei Yang、Hong Liu
DOI:10.1021/ol5024745
日期:2014.10.3
Palladium catalyzed intramolecular addition of C-N and S-N bond to alkynes with the migration of functional groups has been achieved. A wide range of functional groups including acyl, pyruvoyl, amide, and sulfonyl groups can migrate smoothly and be conveniently introduced at the C-3 postion of indoles in our catalytic system. The operational simplicity and broad substrate scope demonstrate the great potential of this method for the synthesis of highly functional indoles.