AbstractAmong the general interest in fluorinated compounds, trifluoromethoxylated molecules play a specific role. However, despite this interest, the development of efficient reagents to perform trifluoromethoxylation reactions remains a challenge. Here, 2,4‐dinitro‐trifluoromethoxybenzene (DNTFB) is used as a trifluoromethoxylating reagent to perform nucleophilic substitution under mild metal‐free conditions with different leaving groups, including direct dehydroxytrifluoromethoxylation. A mechanistic study rationalized the reaction and subsequently proposed only three reaction conditions, depending on the reactivity of the starting substrates.
摘要 在人们对含氟化合物的普遍兴趣中,三氟甲氧基化分子扮演着特殊的角色。然而,尽管人们对三氟甲氧基化反应很感兴趣,但开发高效的试剂仍是一项挑战。本文以 2,4-二硝基三氟甲氧基苯(DNTFB)为三氟甲氧基化试剂,在温和的无金属条件下与不同的离去基团进行亲核取代反应,包括直接脱羟基三氟甲氧基化反应。一项机理研究对该反应进行了合理化,随后根据起始底物的反应活性提出了三种反应条件。