BF3 Lewis Acid cat arene propargylation w O-propargyltrichloroacetimidate appl 1,3-diarylpropyne propargylbenzene 1,3-diphenylalleneLi, CWang, J
Organic lithium salts suitable for use in electrolytes for primary or secondary rechargeable batteries include de-localized bulky anions over Lewis acid fragments, typically BF3, and organic moieties. The organic moieties may be, for example, anions derived from fused nitrogen heterocycles (e.g. benze...
Ideally, one low-toxic, stable and commercially cheap available nucleophilic fluorine reagent would drastically promote enantioselective fluorine synthetic innovation and industrial development. As a versatile Lewis acid, commercially available BF3·Et2O is easy to prepare and is widely being used in various...
全球数百万人患有阿尔茨海默病(AD)或帕金森病(PD),这是两种最普遍的神经退行性疾病(ND),这一事实一直是科学的永久挑战。在过去的二十年中,新工具被开发出来,并立即被纳入许多实验室的常规程序,但最有价值的科学贡献是肠道菌群的"觉醒"。肠道菌群的紊乱,例...
Lewis acid catalysisFe3O4 magnetic nanoparticle-supported BF3 was prepared as a new magnetically separable Lewis acid catalyst and successfully used for the one-pot synthesis of alpha-aminonitriles. A broad range of substrates including the aromatic and heteroaromatic aldehydes, cyclic ketones (...
Lewis acidaromatic compoundsFriedel–Crafts reactionring-opening reactionMethylenecyclopropanes react with various arenes to give the Friedel–Crafts reaction products in good yields in the presence of Lewis acid BF3·OEt2.doi:10.1016/j.tetlet.2003.10.086Huang, J. W....
Glyoxal derive hydrazone Lewis acid (BF3 cat, Zr(OTF4 Sc(OTf)3 equiv) [3+2] cycloadd cyclopentadiene alkeneKobayashi, S
BF 3 ·SiO 2 is a simple and efficient Lewis acid catalyst for the one-pot synthesis of polyfunctionalized piperidin-4-ones[J] . Someshwar D. Dindulkar,Paramasivam Parthiban,Yeon Tae Jeong.Monatshefte für Chemie - Chemical Monthly . 2012 (1)...
Lewis acid gases, PF5, BF3 and SiF4 are liberated from their ammonium, alkali metal and pyridinium fluorocomplexes, NH4PF6, NaPF6, KPF6, C5H5NHPF6, C5H5NHBF4 and (C5H5NH)2SiF6, when treated with sulphur trioxide at room temperature. The dissociated ammonium/alkali metal fluorides as well...
BF 3 ·SiO 2 is a simple and efficient Lewis acid catalyst for the one-pot synthesis of polyfunctionalized piperidin-4-ones[J] . Someshwar D. Dindulkar,Paramasivam Parthiban,Yeon Tae Jeong.Monatshefte für Chemie - Chemical Monthly . 2012 (1)...