804-11-5Relevant academic research and scientific papers
Substrate-controlled and highly stereoselective synthesis of 2-aminobut-2-ene-1, 4-diones
Deng, Cong,Yang, Yan,Gao, Meng,Zhu, Yan-Ping,Wu, An-Xin,Ma, Jun-Rui,Yin, Guo-Dong
, p. 3828 - 3834 (2012/07/02)
2-Methylthio-substituted 1,4-enediones, obtained from readily available aryl methyl ketones, were reacted with primary or secondary amines to afford the desired 1,4-diaryl-2-aminobut-2-ene-1,4-diones in excellent yields with high Z/E-stereoselectivity.
Phototransformations of C-benzoylaziridines. Dipolarophilic trapping of photogenerated azomethine ylides
Ramaian, D.,Muneer, M.,Gopidas, K. R.,Das, P. K.,Rath, N. P.,George, M. V.
, p. 4240 - 4246 (2007/10/03)
The phototransformations of a few 2,3-diaroylaziridines and 2-aryl-3-aroylaziridines have been studied by steady-state photolysis and product analysis.The formation of various photoproducts could be substantiated by ring opening via C-C bond cleavage (leading to azomethine ylides), intramolecular hydrogen abstraction, and C-N bond cleavage.Isolation of stereospecific 3-pyrrolidine derivatives from the photoreaction of benzoylaziridines in the presence of DMAD confirms our previous results concerning the azomethine ylides as major transient intermediates, produced under laser pulse photoexcitation.Dimethyl 1-cyclohexyl-2-benzoylpyrrole-3,4-dicarboxylate (25), one of the photoadducts derived from the reaction of 1a and 1b with DMAD undergoes a novel and unusual photoarrangement to give dimethyl 2-(1-benzoylcyclohexyl)pyrrole-3,4-dicarboxylate (27), the structure of which was confirmed through X-ray crystallographic analysis.
