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
Synthesis of tert-butyl peresters from aldehydes by Bu4NI-catalyzed metal-free oxidation and its combination with the Kharasch–Sosnovsky reaction
作者:Wei Wei、Chao Zhang、Yuan Xu、Xiaobing Wan
DOI:10.1039/c1cc14602e
日期:——
A new tert-butyl peresterssynthesis directly from aldehydes and TBHP was developed via Bu(4)NI-catalyzed aldehyde C-H oxidation. Mechanistic studies suggest that the protocol proceeds via a radical process. Combining the method with the Kharasch-Sosnovsky reaction offers a practical approach for the synthesis of allylic esters from simple aldehydes and alkenes via a two-step one-pot procedure.
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