Temperature-controlled solvent-free selective synthesis of tert-butyl peresters or acids from benzyl cyanides in the presence of the TBHP/Cu(OAc)<sub>2</sub> system
作者:H. Hashemi、D. Saberi、S. Poorsadeghi、Kh. Niknam
DOI:10.1039/c6ra27921j
日期:——
tert-butyl peresters was achieved via copper-catalyzed oxidative-coupling of benzyl cyanides with tert-butyl hydroperoxide in short reaction times. Various derivatives of tert-butyl peresters were synthesized by this pathway in good to excellent yields. Further investigation revealed that the above-mentioned protocol is effective for the synthesis of benzoic acid derivatives when the reaction is conducted
Rhodium(III)-Catalyzed C–H Activation/Alkyne Annulation by Weak Coordination of Peresters with O–O Bond as an Internal Oxidant
作者:Jiayu Mo、Lianhui Wang、Xiuling Cui
DOI:10.1021/acs.orglett.5b02291
日期:2015.10.16
A redox-economic strategy has been developed, involved in an efficient Rh(III)-catalyzed oxidative C–H activation and alkyneannulation with perester as the oxidizing directing group. In this process, the cleavage of an oxidizing O–O bond as an internal oxidant is described for the first time. This reaction could be carried out under mild conditions and exhibits excellent regioselectivity and wide
Sunlight assisted solvent free synthesis of <i>tert</i>-butylperesters
作者:Raju Singha、Prasenjit Shit
DOI:10.1080/00397911.2020.1783560
日期:2020.9.1
A green and efficient methodology has been developed for the direct conversion of aryl aldehydes to the corresponding tert-butyl peresters. The reaction has been carried out in absence of any solvent and the sunlight is used as the green source of energy. In this reaction tetrabutylammonium iodide (TBAI) acts as the mild organo catalyst and tert-butyl hydroperoxide (TBHP) serve as the source of tert-butyl
Bu<sub>4</sub>NI-catalyzed construction of tert-butyl peresters from alcohols
作者:Hui Zhang、Dao-Qing Dong、Shuang-Hong Hao、Zu-Li Wang
DOI:10.1039/c5ra27500h
日期:——
A new method for the synthesis of tert-butyl peresters directly from available alcohols catalyzed by Bu4NI at room temperature in an aqueous system was developed. Additionally, allylic esters could also be obtained by combing this method and Kharasch–Sosnovsky reaction via a two-step one-pot procedure.
Oxidative Radical NHC Catalysis: Divergent Difunctionalization of Olefins through Intermolecular Hydrogen Atom Transfer
作者:Qing‐Zhu Li、Yan‐Qing Liu、Xin‐Xin Kou、Wen‐Lin Zou、Ting Qi、Peng Xiang、Jin‐Dun Xing、Xiang Zhang、Jun‐Long Li
DOI:10.1002/anie.202207824
日期:2022.11.2
An unprecedented oxidative radical NHC catalytic system is reported that allows an efficient difunctionalization of olefins for the divergentsynthesis of various ketones. Key to success is the use of peroxyesters as “dual-role” reagents to achieve a sequential single-electron oxidation and intermolecular hydron atom transfer.