Pd/C and RuCl2(PPh3)3/DPEphos effectively catalyzed the alkylation of indole with alcohols to give 3‐substituted indoles selectively. Various types of substrates were examined and were found to give the corresponding 3‐substituted indoles in up to 99 % yield. Under different reaction conditions, RuCl2(PPh3)3/DPEphos catalyzed the selective formation of bis(3‐indolyl)phenylmethane derivatives.
iron carbonyl complexes have been applied in alkylation of indoles with various benzylic alcohols, aliphatic alcohols (butanol, ethanol, methanol and 2‐methylpentanol) via the hydrogen autotransfer strategy in mild reaction conditions. Experimental works highlight the role of the bifunctional iron complexes and the base. These iron complexes demonstrated a broad applicability in mildconditions and
Nickel-catalyzed C3-alkylation of indoles with alcohols <i>via</i> a borrowing hydrogen strategy
作者:Miao Hu、Yong Jiang、Nan Sun、Baoxiang Hu、Zhenlu Shen、Xinquan Hu、Liqun Jin
DOI:10.1039/d1nj01581h
日期:——
An efficient Ni-catalyzed C3-alkylation of indoles with alcohols via a borrowing hydrogen pathway was achieved utilizing an N,O-donor coordinated nickel complex as the precatalyst.
Rapid and General Protocol towards Catalyst-Free Friedel-Crafts C-Alkylation of Indoles in Water Assisted by Microwave Irradiation
作者:Margherita De Rosa、Annunziata Soriente
DOI:10.1002/ejoc.200901333
日期:2010.2
uncatalyzed Friedel― Crafts alkylation of indoles using microwave irradiation in water is described. A series of functionalized indole derivatives has been synthesized in very short times with moderate to good yields. The combination of microwave irradiation and superheated water offers significant advantages over conventional methods, such as higher selectivities, simplicity, shorter reaction times, and
Indoles are a popular heterocycle scaffold that can be found in various natural products and advanced materials, which are related to our daily life commodities. In this work, we developed an efficient method to synthesize C3-alkylated and alkenylated indoles via manganese-catalyzed dehydrogenative transformation of benzyl alcohols and 2-arylethanols with indoles under mild conditions with high yield