915712-34-4Relevant articles and documents
Multicomponent Approach to Hydantoins and Thiohydantoins Involving a Deep Eutectic Solvent
Kotha, Sambasivarao,Gupta, Naveen K.,Aswar, Vikas R.
, p. 3188 - 3197 (2019)
We report an efficient synthetic strategy to diverse hydantoins and thiohydantoins involving a three-component reaction with the aid of deep eutectic solvent. Here, N,N′-dimethyl urea and N,N′-dimethyl thiourea play a dual role as reactant and reaction medium along with l-(+)-tartaric acid. The three-component reaction provides an easy access to 5-amino-1,3-dialkyl-substituted hydantoins and thiohydantoins in good yields.
Polarity-Reversed Addition of Enol Ethers to Imines under Visible Light: Redox-Neutral Access to Azide-Containing Amino Acids
Yang, Sen,Zhu, Shuangyu,Lu, Dengfu,Gong, Yuefa
supporting information, p. 8464 - 8468 (2019/10/14)
A three-component and polarity-reversed addition cascade with a glyoxylate-based imine, an enol ether, and TMSN3 was established for the construction of γ-azido amino acids under visible light. This transformation features mild and redox-neutra
Synthesis of Dihydrophenanthridines and Oxoimidazolidines from Anilines and Ethylglyoxylate via Aza Diels-Alder Reaction of Arynes and KF-Induced Annulation
Reddy, R. Santhosh,Lagishetti, Chandraiah,Chen, Shuo,Kiran, I. N. Chaithanya,He, Yun
supporting information, p. 4546 - 4549 (2016/09/28)
The transition-metal-free multicomponent coupling of arynes, anilines, and ethylglyoxylate, proceeding via an inverse electron-demand aza Diels-Alder cycloaddition and N-arylation, has been demonstrated. This protocol allows rapid access to N-aryl dihydrophenanthridine derivatives in moderate to high yields at room temperature from readily available starting materials. In addition, an unprecedented fluoride induced annulation of ethyl(arylimino)acetates led to the formation of highly functionalized oxoimidazolidine derivatives in good yields under mild conditions.