Ruthenium-Catalyzed Alkylation of Indoles with Tertiary Amines by Oxidation of a sp<sup>3</sup>CH Bond and Lewis Acid Catalysis
作者:Ming-Zhong Wang、Cong-Ying Zhou、Man-Kin Wong、Chi-Ming Che
DOI:10.1002/chem.200902387
日期:2010.5.17
catalysts for directC‐3 alkylation of indoles, giving the desired products in high yields (up to 82 % based on 60–95 % substrate conversions). These ruthenium compounds catalyze oxidative couplingreactions of a wide variety of anilines and indoles bearing electron‐withdrawing or electron‐donating substituents with high regioselectivity when using tBuOOH as an oxidant, resulting in the alkylation of N‐arylindoles
A novel multi-component reaction of indole, formaldehyde, and tertiary aromatic amines
作者:Atul Kumar、Siddharth Sharma、Ram Awatar Maurya
DOI:10.1016/j.tetlet.2009.08.046
日期:2009.10
A novel multi-component reaction of indoles, formaldehydes, and tertiary aromatic amines is described for the synthesis of dialkylaminoarylated indoles using silica-supported perchloric acid (HClO4–SiO2) as an inexpensive and highly efficient catalyst. The key features of this multi-component reactions are operational simplicity, mild reaction conditions, regioselectivity, and recycling of catalyst
Metal and acid-free visible light-induced Friedel-Crafts C3-alkylation reactions of indolederivatives were developed using N,N-dimethylanilines as the carbon source. A cheap and readily available organic dye, Rose Bengal, was applied as the photocatalyst. This environmentally friendly transformation afforded C3-alkylated indoles in moderate to good yields under mild conditions.