Electrochemically Promoted Nickel-Catalyzed Carbon–Sulfur Bond Formation
作者:Yang Wang、Lingling Deng、Xiaochen Wang、Zhengguang Wu、Yi Wang、Yi Pan
DOI:10.1021/acscatal.8b04633
日期:2019.3.1
This work describes a nickel-catalyzed Ullmann-type thiolation of aryl iodidesunder mild electrochemical conditions. The simple undivided cell with graphene/nickel foam electrode setups offers excellent substrate tolerance, affording aryl and alkyl sulfides in good chemical yields. Furthermore, the mechanism for this electrochemical cross-coupling reaction has been investigated by cyclic voltammetry
Direct C–H sulfenylation of quinoxalinones with thiols under visible-light-induced photocatalyst-free conditions
作者:Qing-Hu Teng、Yan Yao、Wen-Xiu Wei、Hai-Tao Tang、Jia-Rong Li、Ying-Ming Pan
DOI:10.1039/c9gc03045j
日期:——
We have developed a metal-free and catalyst-free visible-light-promoted direct C–H sulfenylation of quinoxalin-2(1H)-ones with thiols for the synthesis of diverse 3-sulfenylquinoxalin-2(1H)-ones.
potential γ-turn mimetic), were synthesized, and the structure of 11 was secured by X-ray diffraction analysis of its TFA salt. The aforementioned compounds were prepared in solution and by solid-phasesynthesis. Additionally, we have prepared thioenamino diketopiperazine synthon 16.
trifluoromethylarenes through C–Fbondactivation provides an attractive pathway for rapid access to difluorobenzylic substructures in producing pharmaceuticals and agrochemicals. However, recentadvances in this area have been confined to C–C(H) bond construction, thus limiting the diversity of the accessible motifs. In contrast, the selective formation of a carbon–heteroatom bond via C–Fbond functionalization
acid was employed as the cheap promoter and air as the sustainable oxidant. In addition, many functional groups tolerate the reaction conditions and produce a series of sulfur-containing benzo[b]pyrrolo[2,1-c][1,4]oxazine-3,9-diones.