Manganese-Catalyzed Direct Olefination of Methyl-Substituted Heteroarenes with Primary Alcohols
作者:Milan K. Barman、Satyadeep Waiba、Biplab Maji
DOI:10.1002/anie.201804729
日期:2018.7.16
Herein, we present the first catalyticdirectolefination of methyl‐substituted heteroarenes with primary alcohols through an acceptorless dehydrogenative coupling. The reaction is catalyzed by a complex of the earth‐abundant transition metal manganese that is stabilized by a bench‐stable NNN pincer ligand derived from 2‐hydrazinylpyridine. The reaction is environmentally benign, producing only hydrogen
(±)-angustureine, in three steps and high yields (78%, 76%, 74%, and 66%, respectively) from common aldehyde and the ylide respectives. The key step of this approach is based on an unusual Wittig reaction by using the phase transfer medium (aq. NaOH/CH2Cl2 1:1 or t-BuOK/t-BuOH/CH2Cl2 1:1), affording olefinic intermediates in high yields.
PREPARATION OF QUINOLINES SUBSTITUTED AT THE 2 OR 3 POSITION BY AN ALKENYL OR ALKYNYL CHAIN
作者:Mohamed A. Fakhfakh、Xavier Franck、Alian Fournet、Reynald Hocquemiller、Bruno Figadère
DOI:10.1081/scc-120006472
日期:2002.1
ABSTRACT Quinolines substituted by a functionalized alkenyl or an alkynyl chain, either at the 2 or 3 position, were efficiently synthesized from 2-quinaldehyde and 3-bromoquinoline, respectively.
摘要 由 2 位或 3 位官能化烯基或炔基链取代的喹啉分别由 2-喹醛和 3-溴喹啉有效合成。
Synthesis and biological evaluation of substituted quinolines: potential treatment of protozoal and retroviral co-infections
作者:Mohammed A. Fakhfakh、Alain Fournet、Eric Prina、Jean-François Mouscadet、Xavier Franck、Reynald Hocquemiller、Bruno Figadère
DOI:10.1016/j.bmc.2003.09.007
日期:2003.11
We report the synthesis of substituted quinolines and their in vitro biological evaluation against the causal agents of cutaneous leishmaniasis, visceral leishmaniasis, African trypanosomiasis and Chagas' disease. Furthermore, several quinolines have also been tested for their anti-retroviral activity in HIV-1 infected cells. The structure activity relationships of these new synthetic compounds are discussed and emphasis was placed on the treatment of leishmania/HIV co-infections. (C) 2003 Elsevier Ltd. All rights reserved.
Spaeth; Pikl, Chemische Berichte, 1929, vol. 62, p. 2250