化学
羧酸盐
羧酸
催化作用
脱羧
铈
分子内力
激进的
配体(生物化学)
光化学
药物化学
有机化学
生物化学
受体
作者
Satoru Shirase,Sota Tamaki,Koichi Shinohara,Keishi Hirosawa,Hayato Tsurugi,Tetsuya Satoh,Kazushi Mashima
摘要
We found that in situ generated cerium(IV) carboxylate generated by mixing the precursor Ce(OtBu)4 with the corresponding carboxylic acids served as efficient photocatalysts for the direct formation of carboxyl radicals from carboxylic acids under blue light-emitting diodes (blue LEDs) irradiation and air, resulting in catalytic decarboxylative oxygenation of aliphatic carboxylic acids to give C–O bond-forming products such as aldehydes and ketones. Control experiments revealed that hexanuclear Ce(IV) carboxylate clusters initially formed in the reaction mixture and the ligand-to-metal charge transfer nature of the Ce(IV) carboxylate clusters was responsible for the high catalytic performance to transform the carboxylate ligands to the carboxyl radical. In addition, the Ce(IV) carboxylate cluster catalyzed direct lactonization of 2-isopropylbenzoic acid to produce the corresponding peroxy lactone and γ-lactone via intramolecular 1,5-hydrogen atom transfer (1,5-HAT).
科研通智能强力驱动
Strongly Powered by AbleSci AI