Palladium nanoparticles supported on modified single-walled carbon nanotubes: a heterogeneous and reusable catalyst in the Ullmann-type N-arylation of imidazoles and indoles
作者:Hojat Veisi、Nekoo Morakabati
DOI:10.1039/c4nj02108h
日期:——
Application of SWCNT-Met/Pd as an efficient and heterogeneous catalyst in the Ullmann coupling of imidazoles and indoles with aryl iodides.
将SWCNT-Met/Pd应用为咪唑和吲哚与芳基碘化物的乌尔曼偶联反应中的高效异质催化剂。
SBA-15-functionalized melamine-pyridine group-supported palladium(0) as an efficient heterogeneous and recyclable nanocatalyst for<i>N</i>-arylation of indoles through Ullmann-type coupling reactions
SBA‐15‐functionalized melamine–pyridine group‐supported palladium(0) was found to serve as a heterogeneous and recyclable nanocatalyst for N‐arylation of indoles with aryl iodides under a low catalyst loading (0.3 mol% of Pd) through Ullmann‐type CN couplingreactions. A variety of aryl iodides could be aminated to provide the N‐arylated products in good to excellent yields without the need of an
Eight simple N-arylindoles were designed, synthesized and evaluated as human immunodeficiency virus (HIV)-1 integrase inhibitors in vitro for the first time. Among these compounds, 3b, 3e and 3g demonstrated significant anti-HIV-1 integrase activity. Especially 3b showed the highest anti-HIV-1 integrase activity with EC50 value of 7.88 μg/ml and TI value of 24.61. Meantime, some structure–activity relationships were also observed and will provide a new lead for design and discovery of more potent N-arylindoles as HIV-1 integrase inhibitors.
Aqueous copper-catalyzed N-arylation of indoles: the surfactant strategy
作者:Songbai Liu、Jiahui Zhou
DOI:10.1039/c3nj00226h
日期:——
chemistry despite their great potential in promoting solubility, reactivity and selectivity in metal-mediated cross-couplings. In this study the strategy of surfactant promotion was exemplified in copper-catalyzed N-arylation of indoles in water. The different effects of surfactants during the coupling reaction were first explored. The superior promoting effect of the natural zwitterionic surfactant
One-Pot N-Arylation of Indoles Directly from N-Arylsulfonylindoles via Consecutive Deprotection and SNAr Reactions with Activated Aryl Halides
作者:Hui Xu、Ling-Ling Fan
DOI:10.1248/cpb.57.321
日期:——
involves the consecutive deprotection of N-arylsulfonylindoles as latent indoles and subsequent S(N)Arreactions with activated aryl halides. This tandemreaction affords an efficient and convenient preparation of N-arylindoles that benefit from prior indoles protection by arylsulfonyl group, and can shorten a reaction sequence and improve synthetic efficiency.