One-Pot Synthesis of Functionalized 3-(Trifluoromethyl)phenols by [3+3] Cyclization of 1,3-Bis(silyl enol ethers) with α,β-Unsaturated Trifluoromethyl Ketones
作者:Constantin Mamat、Thomas Pundt、T. H. Tam Dang、Renske Klassen、Helmut Reinke、Martin Köckerling、Peter Langer
The synthesis of a novel series of eleven 6-aryl(5-methyl)-4-trifluoromethyl-2(1H)-pyrimidinones, where aryl=Ph, 4-CH3Ph, 4-FPh, 4-ClPh, 4-BrPh, 4-OCH3Ph and alkyl=H, CH3, from the reaction of 4-aryl-4-methoxy-1,1,1-trifluoro-3-buten-2-ones with urea in the presence of hydrochloric acid, is reported. Trifluoroacetylation of acetophenone- and propiophenone-dimethylacetals derived from phenones, was
Regiospecific Synthesis of 3-Alkyl-2-aryl-4-trifluoromethylbenzo[h]quinolines by Intramolecular Cyclization of N-(2-Alkyl-1-aryl-3-oxo-4,4,4-trifluorobut-1-en-1-yl)-1-naphthylamines
作者:Helio Gauze Bonacorso、Simone Helena Goulart Duarte、Nilo Zanatta、Marcos Antonio Pinto Martins
DOI:10.1055/s-2002-31953
日期:——
3-alkyl-2-aryl-4-trifluoromethylbenzo[h]quinolines derivatives 3a-1, where alkyl = H, Me; aryl = Ph, 4-MeC 6 H 4 , 4-FC 6 H 4 , 4-ClC 6 H 4 , 4-BrC 6 H 4 , 4-OMeC 6 H 4 and 4-NO 2 C 6 H 4 , by intramolecularcyclization of the readily available intermediates N-(2-alkyl-1-aryl-3-oxo-4,4,4-trifluorobut-1-en-1-yl)-1-naphthylamines 2a-1 using poly-phosphoric acid, is reported. Compounds 2 are obtained from the
获得一系列3-烷基-2-芳基-4-三氟甲基苯并[h]喹啉衍生物3a-1的简便方法,其中烷基=H,Me;芳基 = Ph、4-MeC 6 H 4 、4-FC 6 H 4 、4-ClC 6 H 4 、4-BrC 6 H 4 、4-OMeC 6 H 4 和4-NO 2 C 6 H 4 ,通过分子内使用多磷酸环化容易获得的中间体 N-(2-烷基-1-芳基-3-氧代-4,4,4-三氟丁-1-烯-1-基)-1-萘胺 2a-1,被报道。化合物2由3-烷基-4-芳基-1,1,1-三氟-4-烷氧基丁-3-烯-2-酮1a-1与1-萘胺在氯仿中回流反应得到。
ClickEnam. 1. Synthesis of novel 1,4-disubsituted-[1,2,3]-triazole-derived β-aminovinyl trifluoromethylated ketones and their copper(II) complexes
The copper(I) catalyzed cycloaddition reaction of N-Boc propargyl amine (dipolarophile) 1 with benzyl azide (1,3-dipole) 2 was found to proceed smoothly in t-BuOH/H2O at room temperature, to furnish the corresponding 1,4-disubstituted-[1,2,3]-triazole-derived N-Boc amine 3 in good yield. Deprotection of 3 with trifluoroacetic acid and addition of the trifluoroacetate salt 4 in the presence of triethylamine, with a series of methoxyvinyl(trifluoromethyl)ketones 10-14, gave the corresponding beta-aminovinyl trifluormethylated ketones 15-19 in moderate to good yields. Two copper(II) complexes, one monomer and one dimer with chlorine double bridge, 20 and 21, respectively, were also prepared and their crystal structure determined. beta-Aminovinyl trifluoromethylated ketones 15-17 and complexes 20 and 21 have been screened as potential antifungal agents and the antimalarial activity of 15 and 16 were tested against two Plasmodium falciparum strains (3D7 and W2). (C) 2011 Elsevier B.V. All rights reserved.