Double Heteroatom Functionalization of Arenes Using Benzyne Three-Component Coupling
作者:José-Antonio García-López、Meliha Çetin、Michael F. Greaney
DOI:10.1002/anie.201410751
日期:2015.2.9
Arynes participate in three‐component coupling reactions with N, S, P, and Se functionalities to yield 1,2‐heteroatom‐difunctionalized arenes. Using 2‐iodophenyl arylsulfonates as benzyne precursors, we could effectively add magnesiated S‐, Se‐, and N‐nucleophilic components to the strained triple bond. In the same pot, addition of electrophilic N, S, or P reagents and a copper(I) catalyst trapped
Thoination of N-alkyl-O-acyl hydroxamic acid derivatives via Lawesson's reagent
作者:Yasair S.S. Al-Faiyz
DOI:10.1016/j.molstruc.2021.131497
日期:2022.2
N-alkyl-O-acyl thiohydroxamic acid derivatives were prepared in good yields by the treatment of their parent hydroxamic acids with Lawesson's reagent. Some of these thiohydroxamic acid derivatives exhibit the ability to undergo rearrangement under basic conditions possibly via [3,3]-sigmatropic in moderate to good yields similar to their parent hydroxamic acids.
Practical catalytic method for synthesis of sterically hindered anilines
作者:Melrose Mailig、Richard P. Rucker、Gojko Lalic
DOI:10.1039/c5cc03565a
日期:——
A practical catalytic method for the synthesis of sterically hinderedanilines is described. The amination of aryl and heteroaryl boronicesters is accomplished using a catalyst prepared in situ from...
NiH-Catalyzed Proximal-Selective Hydroamination of Unactivated Alkenes
作者:Jinwon Jeon、Changseok Lee、Huiyeong Seo、Sungwoo Hong
DOI:10.1021/jacs.0c10333
日期:2020.12.2
unactivated alkenes with diverse amine sources. The key to the successful implementation of this approach is the promotion of NiH insertion into even highly substituted olefins via coordination of the bidentate directing group to the nickel complex. A wide range of primary and secondaryamines can be installed in both internal and terminal unactivated alkenes with excellent regiocontrol under the optimized
Multifunctionalization of Unactivated Cyclic Ketones via Synergistic Catalysis of Copper and Diarylamine: Access to Cyclic α-Enaminone
作者:Yang Li、Ran Zhang、Xihe Bi、Junkai Fu
DOI:10.1021/acs.orglett.8b00125
日期:2018.2.16
A multifunctionalization of unactivated cyclicketonesvia synergistic catalysis of copper and diarylamine for the direct synthesis of cyclic α-enaminone is reported for the first time. This reaction goes through oxidative α-amination, followed by a desaturation, and features mild reaction conditions, a broad substrate scope, and great functional group tolerance.