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。