Transfer of Chirality in the Rhodium-Catalyzed Intramolecular Formal Hetero-[5+2] Cycloaddition of Vinyl Aziridines and Alkynes: Stereoselective Synthesis of Fused Azepine Derivatives

被引:100
|
作者
Feng, Jian-Jun [1 ]
Lin, Tao-Yan [1 ]
Wu, Hai-Hong [1 ]
Zhang, Junliang [1 ]
机构
[1] E China Normal Univ, Dept Chem, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China
关键词
INTERMOLECULAR 5+2 CYCLOADDITION; 7-MEMBERED RINGS; REARRANGEMENT; HETEROCYCLES; REACTIVITY; 3-ACYLOXY-1,4-ENYNES; VINYLCYCLOPROPANES; ISOMERIZATION; SELECTIVITY; CYCLIZATION;
D O I
10.1021/jacs.5b01305
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
By taking advantage of vinyl aziridines as a heteroatom-containing five-atom component in rhodium-catalyzed intramolecular formal hetero-[5 + 2] cycloaddition reactions with alkynes, a highly efficient method for the synthesis of fused azepine derivatives at 30 degrees C was developed. The reaction has broad substrate scope and tolerates a wide range of functional groups. The chirality of vinyl aziridine-alkyne substrates can be completely transferred to the cycloadducts, representing an atom-economic and enantiospecific protocol for the construction of fused 2,5-dihydroazepines for the first time.
引用
收藏
页码:3787 / 3790
页数:4
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