Synthesis of Polyfluoroalkyl Cyclobutenes from 3-Aza-1,5-enynes via an Aza-Claisen Rearrangement/Cyclization Cascade

被引:18
|
作者
Xin, Xiaoyi [1 ]
Wang, Dongping [1 ]
Wu, Fan [1 ]
Wang, Chunxiang [1 ]
Wang, Haolong [1 ]
Li, Xincheng [1 ]
Wan, Boshun [1 ]
机构
[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
基金
中国国家自然科学基金;
关键词
INTERMOLECULAR 2+2 CYCLOADDITION; PLATINUM-CATALYZED CYCLOISOMERIZATION; RING EXPANSION; ENANTIOSELECTIVE SYNTHESIS; STEREOSELECTIVE-SYNTHESIS; TERMINAL ALKYNES; ALKENES; FACILE; 1,1,3-TRIARYLPROP-2-YN-1-OLS; VINYLALLENES;
D O I
10.1021/ol4020738
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A facile synthetic route to access polyfluoroalkyl functionalized cyclobutenes bearing an exo cyclic double bond from 3-aza-1,5-enynes is reported. The reaction proceeds via a thermal aza-Claisen rearrangement to give an allene-imine intermediate; subsequent cyclization affords the cyclobutene core. The kinetics of the transformation of starting material and the intermediate was studied by H-1 NMR spectroscopy, where a consecutive reaction was revealed.
引用
收藏
页码:4512 / 4515
页数:4
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