作者:Rahul P.、Nitha P. R.、Vishnu K. Omanakuttan、Sheba Ann Babu、P. Sasikumar、Vakayil K. Praveen、Henning Hopf、Jubi John
DOI:10.1002/ejoc.202000365
日期:2020.5.29
A transition metal‐free superbase mediated indirectFriedländer reaction was developed for accessing functionalized quinolines using o‐aminobenzyl alcohol and ketones with an active methylene moiety. The reaction was employed in the functionalization of natural products and the applicability of the reaction for gram‐scale synthesis of quinolines was also demonstrated.
Redox‐Neutral Decarbonylative Cross‐Couplings Coming of Age
作者:Qun Zhao、Michal Szostak
DOI:10.1002/cssc.201900408
日期:2019.7.5
redox‐neutral decarbonylative cross‐coupling of carboxylic acids. For example, the use of acid fluorides as effective cross‐coupling partners has been found to enable control of the decarbonylation selectivity and facilitates challenging Pd0‐catalyzed nucleophilic trifluoromethylation and exogenous base‐free Suzuki cross‐coupling reactions. In another recent advance, the use of acidchlorides in room temperature
The reaction goes equally well when 2-nitrobenzyl methyl ether was used instead of 2-nitrobenzyl alcoholunder otherwise identical conditions, shedding a new light on the study of this quinoline synthetic method. An iron-catalyzed redox condensation of 2-nitrobenzyl alcohols, formic acid, and alcohols has been developed, which affords substituted quinolines with carbon dioxide and water as the only side
作者:Joseph C. Sloop、Carl L. Bumgardner、W.David Loehle
DOI:10.1016/s0022-1139(02)00221-x
日期:2002.12
Selected 1,3-diketones having a trifluoromethyl group and/or a fluorine in the 2-position were condensed with aromatic hydrazines, hydroxylamine, urea, thiourea, guanidine, and substituted anilines producing pyrazoles, isoxazoles, pyrimidines, and quinolines, respectively, in yields ranging from 27 to 87%.
benzoxazinanones (4) with sulfur ylides (2) is reported. While the reactions of 4-vinyl/4-CF3 benzoxazinanones (1a/1c) with 2 furnished the 3-vinyl/3-CF3 indolines (3a/3c), via an attack on the C1 carbon of the π-allyl/benzyl zwitterionic intermediates, 4 was converted into 4-trifluoromethyl-dihydroquinolines (5) in good yields via an attack on the C3 carbon of the π-allyl intermediate. The corresponding