76292-78-9Relevant academic research and scientific papers
Br?nsted Acid-Catalyzed Three-Component 1,3-Dipolar Cycloadditions of 1,2-Disubstituted Alkynes with Aldehyde-Generated Azomethine Ylides
Tan, Wei,Du, Bai-Xiang,Guo, Lu,Li, Mei,Xing, Gui-Juan,Shi, Feng
, p. 1055 - 1061 (2015)
The first 1,3-dipolar cycloadditions (1,3-DCs) of 1,2-disubstituted alkynes with aldehyde-generated azomethine ylides have been established, leading to the efficient synthesis of poly-substituted 2,5-dihydropyrroles.The Br?nsted acid-catalyzed three-compo
Axially Chiral Cyclic Phosphoric Acid Enabled Enantioselective Sequential Additions
Yuan, Xi,Wu, Xudong,Zhang, Pengxiang,Peng, Fei,Liu, Can,Yang, Haijun,Zhu, Changjin,Fu, Hua
supporting information, p. 2498 - 2503 (2019/04/30)
Efficient axially chiral cyclic phosphoric acid catalyzed enantioselective sequential additions of 2-aryl-3H-indol-3-ones, aldehydes, and diethyl 2-aminomalonate have been developed, and a new type of nitrogen-containing heterocyclic compounds, 2,3-dihydro-1H-imidazo[1,5-a]indol-9(9aH)-one derivatives, were prepared in good yields and excellent ee values with a wide functional group tolerance, in which the reactivity and enantioselectivity of the substrates were enabled by our newly developed axially chiral cyclic phosphoric acid, (R)-CYC-9-CPA. Furthermore, the corresponding 1H-imidazo[1,5-a]indol-9(9aH)-ones were constructed through the easy oxidation of 2,3-dihydro-1H-imidazo[1,5-a]indol-9(9aH)-one derivatives.
Catalytic chemoselective [3+3] cycloadditions of azomethine ylides with quinone monoimides leading to the construction of a dihydrobenzoxazine scaffold
Wang, Cong-Shuai,Zhu, Ren-Yi,Zhang, Yu-Chen,Shi, Feng
supporting information, p. 11798 - 11801 (2015/07/15)
A chemoselective [3+3] cycloaddition of in situ generated azomethine ylides with quinone monoimides has been established, which efficiently led to the construction of dihydrobenzoxazine frameworks with biological relevance, with excellent chemoselectiviti
PREPARATION AND THERMAL FRAGMENTATION OF IMIDAZOLIDINES DERIVED FROM ARYL IMINES
Amornraksa, Kitti,Grigg, Ronald
, p. 2197 - 2200 (2007/10/02)
Aryl imines of diethyl aminomalonate undergo facile dimerisation to imidazolidines.Heating the imidazolidines at 110 deg C in the presence of N-phenyl maleimide or diethyl azodicarboxylate gives pyrrolidines and triazolidines respectively via a retro 1,3-dipolar cycloaddition.
