Yeongju Seong, Sanghun Lee, Seungyeon Cho, Yoseph Kim, Youngjo Kim
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引用次数: 0
摘要
2-(1H-1,2,4- 三唑-3-基)苯酚(CAT-1)被用作有机催化剂,用于在环境温度和大气二氧化碳压力(1 巴)下进行二氧化碳与环氧化物的偶联反应。这种化合物的结构是一个氢键供体、一个氢键受体和另一个氢键供体在分子中依次相邻。CAT-1/nBu4NI 的二元催化体系在室温 1 bar CO2 条件下,使用 2-丁基环氧乙烷在 12 小时内显示出 TON = 19.2 和 TOF = 1.60 h-1。令人惊讶的是,苯酚和 1H-1,2,4-三唑化学连接的 CAT-1 的活性比在相同反应条件下简单混合等量苯酚和 1H-1,2,4-三唑所产生的协同效应要大得多。此外,我们的系统还显示出广泛的末端和内部环氧化物底物范围。
Organocatalysts for the Synthesis of Cyclic Carbonates under the Conditions of Ambient Temperature and Atmospheric CO2 Pressure
2–(1H–1,2,4–Triazol–3–yl)phenol (CAT–1) was used as an organocatalyst for the coupling reaction of CO2 and epoxides at an ambient temperature and atmospheric CO2 pressure (1 bar). This compound has a structure in which a hydrogen bond donor, a hydrogen bond acceptor, and another hydrogen bond donor are adjacent in sequence in a molecule. The binary catalytic system of CAT–1/nBu4NI showed TON = 19.2 and TOF = 1.60 h−1 under 1 bar CO2 at room temperature within 12 h using 2–butyloxirane. Surprisingly, the activity of CAT–1, in which phenol and 1H–1,2,4–triazole are chemically linked, showed a much greater synergistic effect than when simply mixing the same amount of phenol and 1H–1,2,4–triazole under the same reaction conditions. In addition, our system showed a broad terminal and internal epoxide substrate scope.
期刊介绍:
ACS Applied Electronic Materials is an interdisciplinary journal publishing original research covering all aspects of electronic materials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials science, engineering, optics, physics, and chemistry into important applications of electronic materials. Sample research topics that span the journal's scope are inorganic, organic, ionic and polymeric materials with properties that include conducting, semiconducting, superconducting, insulating, dielectric, magnetic, optoelectronic, piezoelectric, ferroelectric and thermoelectric.
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