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Organocatalytic formal [2+2] cycloaddition initiated by vinylogous Friedel-Crafts alkylation: enantioselective synthesis of substituted cyclobutane derivatives
被引:51
|作者:
Duan, Guo-Jian
[1
]
Ling, Jun-Bing
[1
]
Wang, Wei-Ping
[1
]
Luo, Yong-Chun
[1
]
Xu, Peng-Fei
[1
]
机构:
[1] Lanzhou Univ, State Key Lab Appl Organ Chem, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China
关键词:
DIELS-ALDER REACTIONS;
BONDING CATALYSIS;
ALDOL REACTION;
ALDEHYDES;
INDOLE;
SCEPTRIN;
AGENT;
D O I:
10.1039/c3cc41785a
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
An organocatalytic vinylogous Friedel-Crafts alkylation-initiated formal [2+2] cycloaddition was successfully developed based on tandem iminium-enamine activation of enals. Transformable pyrrole-functionalized cyclobutanes with three contiguous stereo-centers were readily obtained with excellent levels of regio-, diastereo- and enantiocontrol.
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页码:4625 / 4627
页数:3
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