共 50 条
Catalytic asymmetric cyclopropanation of sulfoxonium ylides catalyzed by a chiral-at-metal rhodium complex
被引:8
|作者:
Ming, Siliang
[1
]
Yang, Jian
[1
]
Wu, Shi
[1
]
Yao, Gang
[1
]
Xiong, Hongwei
[1
]
Du, Yu
[2
]
Gong, Jun
[1
]
机构:
[1] Hubei Univ Sci & Technol, Sch Pharm, Xianning 437100, Hubei, Peoples R China
[2] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Peoples R China
来源:
基金:
中国国家自然科学基金;
关键词:
2,2-DISUBSTITUTED TERMINAL EPOXIDES;
SULFUR YLIDES;
CYCLIZATION REACTIONS;
MICHAEL ADDITION;
EPOXIDATION;
FUNCTIONALIZATION;
INSERTION;
D O I:
10.1039/d2qo01068b
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
An efficient asymmetric cyclopropanation of sulfoxonium ylides with alpha,beta-unsaturated 2-acyl imidazoles catalyzed by a chiral-at-metal rhodium complex has been developed. The enantioenriched cyclopropane derivatives bearing three contiguous tertiary stereocenters were obtained in generally high yields (up to 98%) with excellent stereoselectivities (up to >20 : 1 dr, >99% ee). Remarkably, as low as 0.1 mol% of the chiral Rh(iii) complex can realize a scale-up reaction with excellent yield and enantioselectivity.
引用
收藏
页码:5147 / 5153
页数:7
相关论文