Facile Access to Pyrazolines via Domino Reaction of the Huisgen Zwitterions with Aziridines
摘要:
A novel, efficient, and general domino reaction of 2-acylaziridines with the Huisgen zwitterions to furnish 2-pyrazoline rings is described. A possible mechanism for the domino sequence is proposed.
Copper-Catalyzed Multicomponent Reaction: Facile Access to Functionalized 5-Arylidene-2-imino-3-pyrrolines
作者:Sun-Liang Cui、Jing Wang、Yan-Guang Wang
DOI:10.1021/ol702241e
日期:2007.11.1
The synthesis of a novel class of 2-imino-5-arylidene-3-pyrrolines via a copper-catalyzed multicomponent reaction of sulfonyl azides with alkynes and aziridines is described. The protocol is efficient and general.
Direct <i>N</i>-H/<i>N</i>-Me Aziridination of Unactivated Olefins Using <i>O</i>-(Sulfonyl)hydroxylamines as Aminating Agents
作者:Shekh Sabir、Chandra Bhan Pandey、Ajay K. Yadav、Bhoopendra Tiwari、Jawahar L. Jat
DOI:10.1021/acs.joc.8b01673
日期:2018.10.5
methods are devoted to their activated counterparts. Herein, we have developed a highly efficient Rh(II)-catalyzed method for the direct preparation of unactivated aziridines from olefins using O-(sulfonyl)hydroxylamines as the aminating agent. The reactions proceed with a high stereospecificity.
Synthesis of polysubstituted pyrroles via [3 + 2]-annulation of aziridines and β-nitroalkenes under aerobic conditions
作者:Shaoyin Wang、Xiancui Zhu、Zhuo Chai、Shaowu Wang
DOI:10.1039/c3ob42324g
日期:——
Polysubstituted pyrroles were regioselectively synthesized in moderate to good yields via the copper acetate-catalyzed [3 + 2] annulation reaction of readily accessible aziridines and nitroalkenes. This reaction was proposed to proceed through a key azomethine ylide intermediate generated by selective C–C bond cleavage of the aziridine followed by annulation with nitroalkenes under aerobic conditions
Copper-catalyzed cascade approach to 1,3-diazabicyclo[3.1.0]hex-3-enes from aziridines and ethyl diazoacetate
作者:Yuanxun Zhu、Shaoyin Wang、Shan Wen、Ping Lu、Yanguang Wang
DOI:10.1016/j.tetlet.2010.07.026
日期:2010.9
An efficient and general synthesis of 1,3-diazabicyclo[3.1.0]hex-3-enes via the copper-catalyzed cascade reaction of aziridines with ethyl diazoacetate is described.
Synthesis of tert-Butyl 1,3-Diaryl-3-oxopropylcarbamates by a Regiocontrolled Reduction of Ketoaziridines
作者:Heshmat Samimi、Bohari Yamin、Fatemeh Saberi
DOI:10.1055/s-0034-1379029
日期:——
A new, convenient approach for the reductive ring opening of N-H ketoaziridines is described. Treatment of N-H ketoaziridines with di-tert-butyl dicarbonate [(Boc)(2)O] in the presence of sodium iodide and nickel(II) chloride results in the corresponding tert-butyl 1,3-diaryl-3-oxopropylcarbamates by a regiocontrolled reaction. The structure of the regioisomeric product was confirmed by X-ray crystal structure analysis.