引导沮丧情绪:由Ar F 2 BH 1与NEt 3或DABCO组成的沮丧Lewis对(FLP)在温和条件下可以激活H 2。理论计算为这两个FLP提出了两种不同的反应途径。对于“更沮丧”的Ar F 2 BH / NEt 3,H 2以逐步的方式被激活。对于“不那么沮丧”的Ar F 2 BH / DABCO,H 2以一致的方式被激活(参见方案)。
引导沮丧情绪:由Ar F 2 BH 1与NEt 3或DABCO组成的沮丧Lewis对(FLP)在温和条件下可以激活H 2。理论计算为这两个FLP提出了两种不同的反应途径。对于“更沮丧”的Ar F 2 BH / NEt 3,H 2以逐步的方式被激活。对于“不那么沮丧”的Ar F 2 BH / DABCO,H 2以一致的方式被激活(参见方案)。
Synthesis of 2-(lutidinyl)organoboranes and their reactivities against dihydrogen and pinacol borane
作者:Junhao Zheng、Yue-Jian Lin、Huadong Wang
DOI:10.1039/c5dt03815d
日期:——
The reactivity of two 2,4,6-tris(trifluoromethyl)phenyl-substituted 2-(lutidinyl)organoboranes as intramolecular frustrated Lewis pairs was investigated.
Synthesis and Reactivity of the CO<sub>2</sub> Adducts of Amine/Bis(2,4,6-tris(trifluoromethyl)phenyl)borane Pairs
作者:Zhenpin Lu、Yuwen Wang、Jia Liu、Yue-jian Lin、Zhen Hua Li、Huadong Wang
DOI:10.1021/om4007246
日期:2013.11.25
Frustrated Lewis pairs (FLPs) comprised of bis(2,4,6-tris(trifluoromethyl)phenyl)borane (1) and a secondary amine (such as HNiPr2 or HNEt2) readily react with CO2 at room temperature to afford ammonium carbamatoborate salts 2. When the reaction was carried out at 80 °C, carbamate boryl esters 3 were obtained with release of 1 equiv of H2. The iPr-substituted carbamate boryl ester 3a can function as
由双(2,4,6-三(三氟甲基)苯基)硼烷(1)和仲胺(例如HN i Pr 2或HNEt 2)组成的沮丧的Lewis对(FLP)在室温下容易与CO 2反应至提供氨基甲酸酯硼酸铵2。当反应在80℃下进行时,获得氨基甲酸酯硼酸酯3,释放出1当量的H 2。在我镨取代的氨基甲酸酯硼酯3a中可以作为分子内FLP以激活H功能2,得到铵borylformate盐4A和甲酰胺加合物5a中。提出了两种导致4a和5a形成的反应途径。