2014
DOI: 10.5935/0103-5053.20140196
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Application of the Negishi Reaction in the Synthesis of Thiophene-Based Lignans Analogues with Leishmanicidal Effects

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Cited by 5 publications
(3 citation statements)
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“…Palladium-catalyzed coupling reactions are among the most important tools to functionalize aromatics and heterocyclic substrates . After transmetalation of organolithium 2 with ZnCl 2 , Negishi cross-coupling reactions with 1-chloro-4-iodobenzene or 2-iodobenzonitrile in the presence of [Pd­(PPh 3 ) 4 ] (5 mol %) produced the expected arylated derivatives 3q or 3r in 50 and 75% yield, respectively (entries 17 and 18).…”
Section: Resultsmentioning
confidence: 99%
“…Palladium-catalyzed coupling reactions are among the most important tools to functionalize aromatics and heterocyclic substrates . After transmetalation of organolithium 2 with ZnCl 2 , Negishi cross-coupling reactions with 1-chloro-4-iodobenzene or 2-iodobenzonitrile in the presence of [Pd­(PPh 3 ) 4 ] (5 mol %) produced the expected arylated derivatives 3q or 3r in 50 and 75% yield, respectively (entries 17 and 18).…”
Section: Resultsmentioning
confidence: 99%
“…13 C{ 1 H} NMR (100 MHz, CDCl 3 ): δ 142.9, 135.9, 134.1, 130.8, 130.3, 127.7, 126.4, 125.9, 21.3. 2,5-Bis(2-methoxyphenyl)thiophene (2g). 41 The product was isolated by column chromatography (hexane/ethyl acetate 90:10) as a purple solid (48 mg, 65% yield); mp 90−92 °C. 1 H NMR (400 MHz, CDCl 3 ): δ 7.60 (dd, J = 7.6, 1.6 Hz, 2H), 7.41 (s, 2H), 7.19− 7.14 (m, 2H), 6.94−6.88 (m, 4H), 3.85 (s, 6H).…”
Section: ■ Conclusionmentioning
confidence: 99%
“…Demonstrando a aplicação desta metodologia em anéis heteroaromáticos com atividade biológica, Clososki e colaboradores descreveram o uso de acoplamento cruzado de Negishi na di-funcionalização de tiofenos com atividade leishimanicida (Esquema 12) (AMARAL et al, 2014).…”
Section: Esquema 11unclassified