213883-19-3Relevant academic research and scientific papers
Synthesis of decahydropyrrolo[2,1,5-cd ]indolizine through consecutive [2 + 3] cycloadditions and 6-exo-trig cyclization
Cui, Peipei,Xu, Liang,Shi, Zhangjie,Gan, Liangbing
, p. 4210 - 4212 (2011)
Azomethine ylide formed from glycine methyl ester and cinnamaldehyde adds to N-phenylmaleimide to form pyrrolidine derivative, further treatment of which with cinnamaldehyde and N-phenylmaleimide affords the second [2 + 3] cycloaddition adduct, a pyrrolizine derivative with two styrenyl groups at the 3,5-positions. Addition of ICl to the pyrrolizine derivative results in the 6-exo-trig cyclization of the styrenyl groups to form a cycl[3.2.2]azine derivative. The reactions are highly stereoselective affording 11 chiral carbons in three steps. The structure of the cycl[3.2.2]azine derivative was determined by single-crystal X-ray analysis.
Silver-Mediated [3 + 2] Cycloaddition of Azomethine Ylides with Trifluoroacetimidoyl Chlorides for the Synthesis of 5-(Trifluoromethyl)imidazoles
Yang, Hefei,Lu, Shu-Ning,Chen, Zhengkai,Wu, Xiao-Feng
supporting information, p. 4361 - 4370 (2021/03/09)
A silver-mediated [3 + 2] cycloaddition of azomethine ylides with trifluoroacetimidoyl chlorides for the rapid assembly of 5-(trifluoromethyl)imidazoles has been developed. Notable features of the reaction include readily accessible reagents, a broad substrate scope, and high efficiency. The protocol can be successfully applied to construct the analogue of the specific allosteric modulator of GABAA receptors. The silver species could be recycled by a simple operation.
A rapid and divergent access to chiral azacyclic nucleoside analogues via highly enantioselective 1,3-dipolar cycloaddition of β-nucleobase substituted acrylates
Yang, Qi-Liang,Xie, Ming-Sheng,Xia, Chao,Sun, Huan-Li,Zhang, Dan-Jie,Huang, Ke-Xin,Guo, Zhen,Qu, Gui-Rong,Guo, Hai-Ming
supporting information, p. 14809 - 14812 (2014/12/11)
A rapid and divergent access to chiral azacyclic nucleoside analogues has been established via highly exo-selective and enantioselective 1,3-dipolar cycloaddition of azomethine ylides with β-nucleobase substituted acrylates. Using 1 mol% of a chiral copper complex, various chiral azacyclic nucleoside analogues were obtained in high yields, excellent exo-selectivities and enantioselectivities (98 to >99% ee). This journal is
Asymmetric construction of 3-vinylidene-pyrrolidine derivatives containing allene moiety via Ag(i)/TF-BiphamPhos-catalyzed 1,3-dipolar cycloaddition of azomethine ylides with diethyl 2-(3,3-diphenylpropa-1,2-dienylidene) malonate
Xue, Zhi-Yong,Fang, Xin,Wang, Chun-Jiang
supporting information; experimental part, p. 3622 - 3624 (2011/06/17)
Catalytic asymmetric 1,3-dipolar cycloaddition of various azomethine ylides with diethyl 2-(3,3-diphenylpropa-1,2-dienylidene)malonate has been developed successfully with good to excellent enantioselectivity for the effcient construction of 3-vinylidene-pyrrolidine derivatives containing a unique allene moiety.
