Synthesis of Functionalized Indoles via Palladium-Catalyzed Cyclization of N-(2-allylphenyl) Benzamide: A Method for Synthesis of Indomethacin Precursor
We developed an efficient method for synthesis of substituted N-benzoylindole via Pd(II)-catalyzed C–H functionalization of substituted N-(2-allylphenyl)benzamide. The reaction showed a broad substrate scope (including N-acetyl and N-Ts substrates) and substituted indoles were obtained in good to excellent yields. The most distinctive feature of this method lies in the high selectivity for N-benzoylindole
Accessing Highly Substituted Indoles via B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>-Catalyzed Secondary Alkyl Group Transfer
作者:Salma A. Elsherbeni、Rebecca L. Melen、Alexander P. Pulis、Louis C. Morrill
DOI:10.1021/acs.joc.4c00025
日期:2024.3.15
synthetic method to access a range of highly substitutedindoles via the B(C6F5)3-catalyzed transfer of 2° alkyl groups from amines. The transition-metal-free catalytic approach has been demonstrated across a broad range of indoles and amine 2° alkyl donors, including various substituents on both reacting components, to access useful C(3)-alkylated indole products. The alkyl transfer process can be
在此,我们报告了一种通过 B(C 6 F 5 ) 3催化的胺的 2° 烷基转移获得一系列高度取代的吲哚的合成方法。无过渡金属的催化方法已在广泛的吲哚和胺 2° 烷基供体(包括两种反应组分上的各种取代基)中得到证明,以获得有用的 C(3)-烷基化吲哚产物。烷基转移过程可以使用Schlenk线技术结合市售的B(C 6 F 5 ) 3 · n H 2 O和溶剂来进行,这消除了对专用设备(例如手套箱)的需要。
Straightforward protocol for the efficient synthesis of varied N1-acylated (aza)indole 2-/3-alkanoic acids and esters: optimization and scale-up
作者:Andy J. Liedtke、Kwangho Kim、Donald F. Stec、Gary A. Sulikowski、Lawrence J. Marnett
DOI:10.1016/j.tet.2012.08.044
日期:2012.12
A library of approximately 40 N-1-acylated (aza)indole alkanoic esters and acids was prepared employing a microwave-assisted approach. The optimized synthetic route allows for parallel synthesis, variation of the indole substitution pattern, and high overall yield. Additionally, the procedure has been scaled up to yield multi-gram amounts of preferred indole compounds, e.g.: 2'-des-methyl indomethacin 2. The reported compounds were designed as biomedical tools for primary and secondary in vitro and in vivo studies at relevant molecular targets. (C) 2012 Elsevier Ltd. All rights reserved.
Boltze; Brendler; Jacobi, Arzneimittel-Forschung/Drug Research, 1980, vol. 30, # 8 A, p. 1314 - 1325