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From Ketones, Amines, and Carbon Monoxide to 4-Quinolones: Palladium-Catalyzed Oxidative Carbonylation
作者:Jiwei Wu、Yuchen Zhou、Ting Wu、Yi Zhou、Chien-Wei Chiang、Aiwen Lei
DOI:10.1021/acs.orglett.7b03337
日期:2017.12.1
A novel method of palladium-catalyzed oxidative carbonylation of ketones, amines, and carbon monoxide for the synthesis of 4-quinolones has been developed. This protocol provides a straightforward route to construct useful 4-quinolone derivatives from inexpensive chemicals.
Syntheses of chromones and quinolones via pd-catalyzed carbonylation of o-iodophenols and anilines in the presence of acetylenes
作者:Sigeru Torii、Hiroshi Okumoto、Long He Xu、Masahiro Sadakane、Michel V. Shostakovsky、Andrew B. Ponomaryov、Valery N. Kalinin
DOI:10.1016/s0040-4020(01)80421-x
日期:1993.7
Synthesis of 2-substituted chromones and quinolones has been performed by a Pd-catalyzed carbonylation of o-iodophenols or o-iodoanilines in the presence of terminalacetylenes in a high yield through coupling of halides and acetylenes followed by cyclization as a one-pot reaction.
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。
Aza Analogs of Flavones as Potential Antimicrobial Agents
In search for the new antimicrobial agents owing to drug resistant bacteria and fungi, a series of rationally designed aza analogs of flavones has been designed and synthesized. The design of the analogs involved incorporation of quinolone nucleus within the flavone framework keeping in view the antimicrobial potential of both the classes. The series of compounds was evaluated for the antibacterial