Synthesis of 2-Nitrothiophenes <i>via</i>
Tandem Henry Reaction and Nucleophilic Substitution on Sulfur from β-Thiocyanatopropenals
作者:Lin Rong、Yingxia Shen、Guoxi Xiong、Yuefa Gong
DOI:10.1002/jhet.3446
日期:2019.2
A new synthetic route of 2‐nitrothiophenes was described through a tetra‐n‐butylammonium fluoride‐promoted or diisopropylethylamine‐promoted tandem Henry reaction and nucleophilic substitution of nitromethane with 3‐thiocyanatopropenals, which were conveniently prepared by the replacement reaction of 3‐chloropropenals with potassium thiocyanate under a mild acidic condition.
通过四正丁基氟化铵促进或二异丙基乙胺促进的串联亨利反应以及用3-硫氰基丙烯醛对硝基甲烷进行亲核取代,描述了一种2-硝基噻吩的新合成路线,该方法可方便地通过将3-氯丙烯醛与在弱酸性条件下的硫氰酸钾。