This paper describes a simple and efficient protocol for the N-alkylation of arylamines with benzyl alcohols using tantalum(V) fluoride as the catalyst.
Iridium catalysed chemoselective alkylation of 2′-aminoacetophenone with primary benzyl type alcohols under microwave conditions
作者:Shailen Bhat、Visuvanathar Sridharan
DOI:10.1039/c2cc31055d
日期:——
2â²-Aminoacetophenone was chemoselectively alkylated with a range of substituted benzyl, heteroaryl alcohols to afford either the corresponding C- or N- alkylated products in good yield.
Direct Amidation of 2′-Aminoacetophenones Using I<sub>2</sub>-TBHP: A Unimolecular Domino Approach toward Isatin and Iodoisatin
作者:Andivelu Ilangovan、Gandhesiri Satish
DOI:10.1021/jo500550d
日期:2014.6.6
Synthesis of isatin and iodoisatin from 2′-aminoacetophenone was achieved via oxidative amido cyclization of the sp3C–Hbond using I2–TBHP as the catalyticsystem. The reaction proceeds through sequential iodination, Kornblum oxidation, and amidation in onepot. This method is simple, atom economic, and works under metal- and base-free conditions.
oxindole synthesis bearing an all-carbon quaternary center, enabled by Pd-catalyzed intramolecular cyclization followed by multiple intermolecular Heck reactions of both easily accessible alkene-tethered carbamoyl chlorides and olefins. This protocol obviates the use of prefunctionalized olefinic reagents, exhibits excellent functional group tolerance, and features fascinating reactive versatility.
Direct Synthesis of 2-Aryl-4-quinolones via Transition-Metal-Free Intramolecular Oxidative C(sp<sup>3</sup>)–H/C(sp<sup>3</sup>)–H Coupling
作者:Wei Hu、Jian-Ping Lin、Li-Rui Song、Ya-Qiu Long
DOI:10.1021/acs.orglett.5b00248
日期:2015.3.6
A novel, metal-free oxidative intramolecular Mannich reaction was developed between secondary amines and unmodified ketones, affording a simple and direct access to a broad range of 2-arylquinolin-4(1H)-ones through C(sp3)–H activation/C(sp3)–C(sp3) bond formation from readily available N-arylmethyl-2-aminophenylketones, using TEMPO as the oxidant and KOtBu as the base.
在仲胺和未改性的酮之间开发了一种新颖的,无金属的氧化性分子内曼尼希反应,可通过C(sp 3)-H活化简单直接地获得广泛的2-芳基喹啉4(1 H)-酮。/ C(sp 3)–C(sp 3)键由易于获得的N-芳基甲基-2-氨基苯基酮形成,使用TEMPO作为氧化剂,KO t Bu作为碱。