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
The effect of hydrogen bond on Brønsted acid-catalyzed intramolecular hydroamination of unfunctionalized olefins
作者:Ting-Ting Li、Gong-Qing Liu、Yu-Mei Wang、Bin Cui、Hui Sun、Yue-Ming Li
DOI:10.1016/j.tet.2015.07.003
日期:2015.9
and amino proton. This interaction also increased the nucleophilicity of the amino group. Thus, in the presence of 20 mol % of 2-(trifluoromethanesulfonamido)benzoic acid, intramolecular hydroamination of unfunctionalizedolefins gave the corresponding products in up to 95% isolated yields.
A New Method for Intramolecular Chloroamination of Unfunctionalized Olefins
作者:Gong-Qing Liu、Wei Li、Yue-Ming Li
DOI:10.1002/adsc.201200352
日期:2013.1.25
A newmethod for the intramolecularchloroamination of unfunctionalizedolefins is reported. The reactions were carried out at room temperature for 3 h using hydrated copper(II) chloride as both promoter and chlorine source, and the corresponding vincinal haloamines were obtained in good isolated yields.
MnI2-catalyzed regioselective intramolecular iodoamination of unfunctionalized olefins
作者:Hui Sun、Bin Cui、Gong-Qing Liu、Yue-Ming Li
DOI:10.1016/j.tet.2016.09.038
日期:2016.11
MnI2-catalyzed intramolecular iodoamination of unfunctionalized olefins was reported. Interaction of MnI2 with N-alkenyl amine/sulfonamide gave NRMnI which produced a CH2MnI intermediate via intramolecular aminometallation of CC double bond. Reductive elimination of CH2I from CH2MnI produced iodomethyl heterocycle with the release of Mn(0) which was confirmed by XPS and XRD experiments.
One-pot preparation of 3-chloropiperidine compounds via Cu(II)-promoted intramolecular chloroamination of unfunctionalized olefins
作者:Run-Lin Li、Gong-Qing Liu、Wei Li、Yu-Mei Wang、Lin Li、Lili Duan、Yue-Ming Li
DOI:10.1016/j.tet.2013.05.022
日期:2013.7
3-Chloropiperidine compounds were obtained via Cu(II)-promoted one-pot intramolecularchloroamination of N-benzyl-4-penten-1-amines and subsequent rearrangement. The reaction conditions leading to this skeleton were studied, and the structure of the product was confirmed by NMR as well as X-ray diffraction experiments.