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.
Stereodivergent Synthesis of N‐Heterocycles by Catalyst‐Controlled, Activity‐Directed Tandem Annulation of Diazo Compounds with Amino Alkynes
作者:Kai Liu、Chenghao Zhu、Junxiang Min、Shiyong Peng、Guangyang Xu、Jiangtao Sun
DOI:10.1002/anie.201507122
日期:2015.10.26
A stereodivergent synthesis of five‐membered N‐heterocycles, such as 2,3‐dihydropyrroles, and 2‐methylene and 3‐methylene pyrrolidines, has been developed through a tandem annulation of amino alkynes with diazo compounds and involves the trapping of in situ formed intermediates. Mechanistic investigations indicate that the copper‐catalyzed tandem annulations proceed by allenoate formation and subsequent
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
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
Gold-Catalyzed Oxidative Cyclization of Chiral Homopropargyl Amides: Synthesis of Enantioenriched γ-Lactams
作者:Chao Shu、Meng-Qi Liu、Shan-Shan Wang、Long Li、Long-Wu Ye
DOI:10.1021/jo400127x
日期:2013.4.5
A gold-catalyzedtandemcycloisomerization/oxidation of homopropargyl amides has been developed, which provides ready access to synthetically useful chiral γ-lactams with excellent ee by combining the chiral tert-butylsulfinimine chemistry and gold catalysis. The utility of this methodology has also been demonstrated in the synthesis of biologically active compound S-MPP and natural product (−)-bgugaine