Copper-Catalyzed Aerobic Methyl/Methylene Oxygenation and C-H Formylation with a DABCO-DMSO System for the Synthesis of Carbonyl Indoles and Pyrroles
作者:Shunsuke Chiba、Yi-Feng Wang、Feng-Lian Zhang
DOI:10.1055/s-0031-1290815
日期:2012.5
Abstract Copper-catalyzed aerobic methyl/methylene oxygenation of substituted indoles and pyrroles was developed using 1,4-diazabicyclo[2.2.2]octane (DABCO) as an additive in dimethyl sulfoxide (DMSO). Similar aerobic catalytic conditions could also be utilized for direct C–H formylation of C(3) on indoles and C(2) on pyrroles. Copper-catalyzed aerobic methyl/methylene oxygenation of substituted indoles
Diaminocyclopentadienone Ruthenium Complex Catalyzed Alkylation of Indoles and Ketones with Primary Alcohols
作者:Steffen Skowaisa、Edgar Haak
DOI:10.1002/ejoc.202300707
日期:——
The borrowing hydrogen approach allows the direct utilization of non-activated alcohols as alkylating agents. A readily available, air and moisture stable ruthenium complex proves to be a particularly effective hydrogen autotransfer catalyst for the alkylation of various indoles or ketones with poorly reactive alcohols.
Photoredox-Catalyzed Decarboxylative Cross-Coupling Reaction to Synthesis Unsymmetrical Diarylmethanes
作者:Guozhe Guo、Yuquan Zhang、Yanchun Li、Zhijun Li
DOI:10.3390/molecules29092156
日期:——
The photoredox-catalyzed decarboxylative cross-coupling reaction of aryl acetic acids and aryl nitriles has been achieved under an argon atmosphere in high yields. This method provides a fast way to obtain prevalent aryl acetic acids from an abundant natural source. A tentative radical mechanism has been proposed.