Gold-Catalyzed Tandem Cycloisomerization and Dimerization of Chiral Homopropargyl Sulfonamides
作者:Yong-Fei Yu、Chao Shu、Cang-Hai Shen、Tian-Yi Li、Long-Wu Ye
DOI:10.1002/asia.201301058
日期:2013.12
A reaction built for two: A novel gold‐catalyzed tandemcycloisomerization/dimerization of chiralhomopropargylsulfonamides has been developed. The reaction provides ready access to functionalized pyrrolidines in mostly good to excellent yields. Notably, excellent diastereoselectivities (>50:1) were also achieved in all cases.
Gold-catalyzed intermolecular oxidation of chiral homopropargyl sulfonamides: a reliable access to enantioenriched pyrrolidin-3-ones
作者:Chao Shu、Long Li、Yong-Fei Yu、Shuang Jiang、Long-Wu Ye
DOI:10.1039/c3cc49238a
日期:——
A gold-catalyzed intermolecular oxidation of chiralhomopropargylsulfonamides has been developed, which provides a reliable access to synthetically useful chiral pyrrolidin-3-ones with excellent ee, by combining the chiral tert-butylsulfinimine chemistry and gold catalysis. This methodology has also been used in the facile synthesis of natural product (-)-irniine. The use of readily available starting
Gold-Catalyzed Tandem Cycloisomerization-Halogenation of Chiral Homopropargyl Sulfonamides
作者:Chao Shu、Long Li、Cang-Hai Shen、Peng-Peng Ruan、Chao-Yue Liu、Long-Wu Ye
DOI:10.1002/chem.201503891
日期:2016.2.12
Two new gold‐catalyzed tandem cycloisomerization–halogenation reactions of chiralhomopropargylsulfonamides have been developed. Various enantioenriched 3,3‐diiodopyrrolidin‐2‐ols and 3‐fluoropyrrolidin‐2‐ols were obtained in moderate‐to‐good yields with excellent enantio‐ and diastereoselectivity.
Efficient and practical synthesis of enantioenriched 2,3-dihydropyrroles through gold-catalyzed anti-Markovnikov hydroamination of chiral homopropargyl sulfonamides
作者:Yong-Fei Yu、Chao Shu、Bo Zhou、Jian-Qiao Li、Jin-Mei Zhou、Long-Wu Ye
DOI:10.1039/c4cc09245g
日期:——
A direct gold-catalyzed 5-endo-dig cycloisomerization of chiralhomopropargylsulfonamides has been developed. A range of enantioenriched 2,3-dihydropyrroles are readily accessed by utilizing this approach. Importantly, this gold-catalyzedcycloisomerization reaction proceeds through an anti-Markovnikov addition by using a catalytic base as the additive, which completely suppresses the undesired dimerization
Synthesis of Enantioenriched Pyrrolidines via Gold-Catalyzed Tandem Cycloisomerization/Hydrogenation of Chiral Homopropargyl Sulfonamides
作者:Yong-Fei Yu、Chao Shu、Tong-De Tan、Long Li、Shahid Rafique、Long-Wu Ye
DOI:10.1021/acs.orglett.6b02736
日期:2016.10.7
novel gold-catalyzedtandemcycloisomerization/hydrogenation of chiralhomopropargylsulfonamides has been developed. Various enantioenriched pyrrolidines can be obtained in excellent yields and excellent enantioselectivities by combination of chiral tert-butylsulfinimine chemistry with gold catalysis. Importantly, this represents the first example of a pyrrolidine synthesis from homopropargyl sulfonamide