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.
Nickel-catalysed chemoselective C-3 alkylation of indoles with alcohols through a borrowing hydrogen method
作者:Amreen K. Bains、Ayanangshu Biswas、Debashis Adhikari
DOI:10.1039/d0cc07169b
日期:——
A nickel catalysed chemoselective C3-alkylation of indole is reported that follows a borrowing hydrogen method promoted by a radical.
一种镍催化的化学选择性C3-吲哚烷基化反应报道了,该反应遵循了由自由基促进的借氢方法。
Iron-Catalyzed Direct C3-Benzylation of Indoles with Benzyl Alcohols through Borrowing Hydrogen
作者:Giovanni Di Gregorio、Michele Mari、Francesca Bartoccini、Giovanni Piersanti
DOI:10.1021/acs.joc.7b01603
日期:2017.8.18
We present the coupling of primary and secondary benzylalcohols with indoles to form 3-benzylated indoles and H2O that is catalyzed, for the first time, by a complex of earth-abundant iron. This transformation accommodates a variety of substrates and is distinguished by its operational simplicity, sustainability, high functional-group tolerance, and amenability to gram-scale synthesis. On the basis
In high-temperature water a series of benzyl and allylic alcohols reacted with 1,3-dicarbonyl compounds and activated aromatic compounds to give the alkylated products without added catalysts.
Catalytic Tandem and One-Pot Dehydrogenation–Alkylation and −Insertion Reactions of Saturated Hydrocarbons with Alcohols and Alkenes
作者:Junghwa Kim、Nuwan Pannilawithana、Chae S. Yi
DOI:10.1021/acscatal.6b02186
日期:2016.12.2
reaction of saturated hydrocarbon substrates with alcohols to form the alkyl-substituted alkene and arene products. The analogous one-pot dehydrogenation–insertion of saturated ketones with alkenes and dienes directly yielded synthetically useful 2-alkylphenol and benzopyran products in a highly regio- and stereoselective manner without forming any wasteful byproducts.