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.
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
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
Dual gold/photoredox-catalyzed bis-arylative cyclization of chiral homopropargyl sulfonamides with diazonium salts: rapid access to enantioenriched 2,3-dihydropyrroles
作者:Ze-Shu Wang、Tong-De Tan、Cai-Ming Wang、Ding-Qiang Yuan、Te Zhang、Pengfei Zhu、Chunyin Zhu、Jin-Mei Zhou、Long-Wu Ye
DOI:10.1039/c7cc03262e
日期:——
yzed bis-arylative cyclization of chiral homopropargyl sulfonamides with diazonium salts has been developed, allowing the facilesynthesis of various enantioenriched 2,3-dihydropyrroles in generally moderate to good yields with excellent enantioselectivities under very mild conditions without using any strong oxidants. The reaction is proposed to undergo an AuI/AuIII redox cycle promoted by visible-light
已经开发了一种新颖的双金/光氧化还原催化的手性高炔丙基磺酰胺与重氮盐的双芳基双芳基环化反应,可以在非常温和的条件下以中等的中度到良好的收率轻松合成各种对映体富集的2,3-二氢吡咯,并具有极好的对映选择性,而无需使用任何强氧化剂。建议该反应经历由可见光光氧化还原催化促进的Au I / Au III氧化还原循环。