AbstractN‐Methyl indole reacts with but‐2‐yn‐1‐ol in the presence of PtCl2 in MeOH giving indole derivatives having a substituted 3‐oxobutyl group at the 3‐position in good yield. Under the reaction conditions, various substituted indoles and substituted propargyl alcohols are successfully involved in the reaction giving the corresponding addition products in good to moderate yields. The catalytic reaction can be further extended to N‐phenyl pyrrole. In the present multi‐step reaction, PtCl2 likely plays dual roles: as the catalyst for the rearrangement of propargyl alcohols to the corresponding alkenyl ketones and as the catalyst for the addition of indoles to the alkenyl ketones. Experimental evidence is provided to support the proposed mechanism.
Catalytic Direct Dehydrogenative Cross-Couplings of C–H (Pro)Nucleophiles and Allylic Alcohols without an Additional Oxidant
作者:Marcel Weiss、René Peters
DOI:10.1021/cs501495g
日期:2015.1.2
Transition-metal-catalyzed cross-coupling reactions between sp2-hybridized C atoms are of prime importance in both target and diversity oriented synthesis. Ideal cross-coupling reactions would neither require any leaving groups nor stoichiometric reagents. In this article, we report the first direct dehydrogenative cross-couplings between aromatic C–H bonds (in most cases using indole substrates) and allylic alcohols
Copper-Catalyzed Synthesis of 2-Aminocarbazoles through Cascade C-C and C-N Bond Formation and Aromatization
作者:Xinlei Liu、Jiangkun Huang、Huibei Xu、Dandan Zhang、Qiu Sun、Ling He
DOI:10.1002/ejoc.201801297
日期:2019.2.7
The one‐pot synthesis of 2‐aminocarbanoles from 1‐(1H‐indole‐3‐yl)pentan‐3‐one through cascade C–C/C–N bond formation using ammonium carbonate as a nitrogen source and copper salt as a catalysis is reported.