1,3-Butadiene plays a key role in modern synthetic chemistry and biochemistry because it is a key intermediate in the synthesis of many drugs. A new and effective method for the synthesis of 4-trifluoromethylated 1,3-butadiene through the fluorinated Heckreaction catalyzed by Pd(0) is described. Without additives, 1-chloro-3,3,3-trifluoropropene (an inexpensive CF3 structural unit that is harmless
Photocatalytic coupling of electron-deficient alkenes using oxalic acid as a traceless linchpin
作者:Zugen Wu、Mingyue Wu、Kun Zhu、Jie Wu、Yixin Lu
DOI:10.1016/j.chempr.2022.12.013
日期:2023.1
Reductive alkene cross-coupling represents a straightforward strategy for the construction of C–C bonds from readily available alkene feedstocks. A one-pot protocol, utilizing oxalic acid as a traceless linchpin, has been developed to achieve direct cross-coupling of electron-deficient alkenes. The overall process is a two-step transformation involving hydrocarboxylation followed by decarboxylative
还原性烯烃交叉偶联代表了从现成的烯烃原料构建 C-C 键的直接策略。已经开发出一种利用草酸作为无痕关键的一锅法来实现缺电子烯烃的直接交叉偶联。整个过程是一个两步转化,涉及加氢羧化,然后是脱羧交叉偶联。双光催化剂系统对于成功至关重要,并协同促进两个反应步骤。该反应支持生物活性分子的有效合成。光氧化还原催化为 CO 2的生成提供了一种简单而温和的途径从草酸中分离出自由基阴离子,这为这种活性中间体在精细化学品合成中的广泛应用铺平了道路。
AgSCF3 Radical Addition Based on an Oxidant-Free α,β-Amide (Trifluoromethyl)sulfanylation Reaction
作者:Yang Li、Zhi-Bo Li、Jin Zhang、Yi-Ran Shi、Hong Li、Min-Ge Yang、Wen-Qing Zhu、Qiang-Wei Fan
DOI:10.1055/s-0043-1763759
日期:2024.12
(Trifluoromethyl)sulfanylamides are an important class of organic compounds that are common among natural products and drug molecules. Here, we report a (trifluoromethyl)sulfanylation reaction using silver(I) (trifluoromethyl)sulfide as a free-radical (trifluoromethyl)sulfanylation reagent for β-amide compounds. This reaction does not require stoichiometric oxidants or additional transition-metal catalysts