Brønsted acid promoted benzylic C–H bond functionalization of azaarenes: nucleophilic addition to aldehydes
作者:Fang-Fang Wang、Cui-Ping Luo、Yi Wang、Guojun Deng、Luo Yang
DOI:10.1039/c2ob26604k
日期:——
A practical Brønsted acid promoted benzylicC–Hfunctionalization of 2-methylazaarenes and nucleophilic addition to aldehydes was developed in good to excellent yields. A six-membered hydrogen-bonding transition state is proposed to be crucial for the reaction. Ready availability of the two starting materials, the use of acetic acid as the catalyst and the facile reaction conditions will guarantee
α‐Chymotrypsin from the bovine pancreas has been shown for the first time to display catalytic nonnatural catalytic ability toward the C (sp3)–H functionalization reaction of 2‐methylquinoline and aromatic aldehydes in water. α‐Chymotrypsin exhibited favorable catalytic activity with good adaptability to different substrates. The activity of the enzyme could be improved by adjusting the solvent, temperature
Acid ionic liquid promoted addition of C(sp3)–H bond to aldehyde
作者:Xue-Yan Zhang、Dao-Qing Dong、Tao Yue、Shuang-Hong Hao、Zu-Li Wang
DOI:10.1016/j.tetlet.2014.08.034
日期:2014.10
A novel protocol for acid ionic liquid promoted C(sp(3))-H bond functionalization of alkyl azaarenes and nucleophilic addition to aldehydes was developed in good to excellent yields, which provides an efficient approach for the synthesis of alkyl-substituted azaarene derivatives. It is worthwhile to note that acid ionic liquid used for this reaction can be recycled and reused six times without a significant decrease in activity. (C) 2014 Elsevier Ltd. All rights reserved.
Magnetically separable CuFe<sub>2</sub>O<sub>4</sub> nanoparticles as a recoverable catalyst for the addition reaction of C(sp<sup>3</sup>)–H bond of azaarenes to aldehydes
作者:Zu-Li Wang
DOI:10.1039/c4ra14486d
日期:——
A green and efficient method for CuFe2O4-catalyzed C(sp3)–H functionalization of 2-alkyl azaarenes has been developed. The catalyst can be magnetically recycled and reused for eight times without significant decrease in catalytic activity.