Palladium-catalyzed intramolecular aminoiodination of alkenes using molecular oxygen as oxidant
作者:Lu Chen、Xianglin Luo、Yibiao Li
DOI:10.1007/s00706-016-1819-2
日期:2017.5
AbstractMolecular oxygen as oxidant to promote palladium-catalyzedintramolecular aminoiodination of alkenes has been described. The yields are excellent and show high exo-selectivities with various substrates. Graphical abstract
Regioselective (Diacetoxyiodo)benzene-Promoted Halocyclization of Unfunctionalized Olefins
作者:Gong-Qing Liu、Yue-Ming Li
DOI:10.1021/jo501739j
日期:2014.11.7
A metal-free method for intramolecular halocyclization of unfunctionalizedolefins was detailed. (Diacetoxyiodo)benzene (PIDA) was very effective for haloamidation, haloetherification, and halolactonization of unfunctionalizedolefins. In the presence of 1.1 equiv of PIDA and suitable halogen sources, a variety of unfunctionalizedolefins could be converted to the corresponding 1,2-bifunctional cyclic
A novel approach for copper-promoted intramolecular aminotrifluoromethylation of alkenes using inexpensive CF3SO2Na as the trifluoromethyl source is described. The feature of this method is the concurrent construction of a five-membered ring and a C–CF3 bond in the simple copper salt/TBHP system. A gram-scale reaction was tested with a slight decrease in the yield. This protocol provides an operationally
Two efficacious synthetic methodologies for the construction of medium-sized nitrogen heterocycles dibenzoazocinones have been developed. The phosphine-assisted protocol afforded better yields of the dibenzoazocinones (73–82%).
Cascade Radical Reaction of <i>N</i>-Sulfonyl-2-allylanilines with [60]Fullerene: Synthesis and Functionalization of (2-Indolinyl)methylated Hydrofullerenes
作者:Sheng-Peng Jiang、Mengmeng Zhang、Cheng-Yu Wang、Shangfeng Yang、Guan-Wu Wang
DOI:10.1021/acs.orglett.7b02343
日期:2017.10.6
radical reaction of N-sulfonyl-2-allylanilines with [60]fullerene has been developed to efficiently provide novel and scarce (2-indolinyl)methylated hydrofullerenes, featuring a broad substrate scope and excellent functional group tolerance. A plausible reactionmechanism for the formation of (2-indolinyl)methylated hydrofullerenes is proposed on the basis of the experimental results. In addition, further