Converting urea into high value-added 2-oxazolidinones under solvent-free conditions
作者:Peixue Wang、Qinghe Li、Shimin Liu、Youquan Deng
DOI:10.1039/c6ra21809a
日期:——
Zn-modified mesoporous Mg–Al nanoplates oxides were prepared by co-precipitation and further characterized and used in the synthesis of 2-oxazolidinones from urea and epoxides undersolvent-freeconditions. The characterization results suggested that Zn1.1Mg2.0AlO4.6, which featured more accessible active medium basic sites, were favorable for obtaining superior catalytic activity. This synthetic process
Aluminium-Catalysed Oxazolidinone Synthesis and their Conversion into Functional Non-Symmetrical Ureas
作者:Victor Laserna、Wusheng Guo、Arjan W. Kleij
DOI:10.1002/adsc.201500635
日期:2015.9.14
range of functionaloxazolidinones is reported. The method is based on cheap and readily available starting materials including terminal and internal (bicyclic) epoxides and phenyl carbamate. The oxazolidinones serve as highly useful synthons for the high yield preparation of non‐symmetrical ureas by nucleophilic ring‐opening affording the targeted urea compounds with excellent functional group diversity
Efficient synthesis of 2-oxazolidinones from epoxides and carbamates catalyzed by amine-functionalized ionic liquids
作者:Jianpeng Shang、Zuopeng Li、Caina Su、Yong Guo、Youquan Deng
DOI:10.1039/c5ra09838f
日期:——
A series of amine-functionalized ionicliquids were prepared and their catalytic performance was tested in the synthesis of 2-oxazolidinones from epoxides and carbamates. Under optimized reaction conditions, good to excellent yields of various 2-oxazolidinones were achieved with different epoxides and carbamates. Moreover, the amine-functionalized ionicliquid catalyst could be easily recovered and
Organotellurium-mediated synthesis of oxazolidin-2-ones from alkenes
作者:Nan X. Hu、Yoshio Aso、Tetsuo Otsubo、Fumio Ogura
DOI:10.1039/c39870001447
日期:——
Phenyltellurinyl trifluoracetate in combination with ethyl carbamate and boron trifluoride–diethyl ether reacted with alkenes in refluxed 1,2-dichloroethane, regio- and stereo-selectively giving oxazolidin-2-ones in high yields.