organocatalyst for the atom‐economic conversion of a plethora of alkyl‐ and aryl‐substituted epoxides and isocyanates into oxazolidinones is described. A mechanism was proposed wherein the nucleophilic ring‐opening operation, and oxo‐ and carbamate‐anions stabilization occur cooperatively towards isocyanate fixation.
Synthesis of N-aryl-2-oxazolidinones from cyclic carbonates and aromatic amines catalyzed by bio-catalyst
作者:Congmin Mei、Yibo Zhao、Ke Zou、Changsheng Cao、Guangsheng Pang、Yanhui Shi
DOI:10.1007/s11164-017-3222-y
日期:2018.3
A convenient and effective method of synthesizing 3-aryl-2-oxazolidinones from cyclic carbonates and aryl amines catalyzed by bio-catalyst adenine in the presence of Et3N under solvent-free conditions is described. The protocol is suitable for the wide scope of substrates, e.g. cyclic carbonates with or without substitutes, and aryl amines with either electron-withdrawing or electron-donating group
The catalytic system ‘Rhodamine B/additive’ for the chemical fixation of CO2
作者:Feng-tian Wu、Ling Wu、Chun-na Cui
DOI:10.1016/j.tet.2021.131965
日期:2021.3
The catalytic system ‘RhodamineB/additive’ was introduced to promote the CO2 reactions. We synthesized various cyclic carbonates in good to excellent yields under the catalysis of rhodamineB and TBAB. A variety of 2-oxazolidinone derivatives were obtained in the presence of rhodamineB and DBU.
Potassium phosphate-catalyzed one-pot synthesis of 3-aryl-2-oxazolidinones from epoxides, amines, and atmospheric carbon dioxide
作者:Ue Ryung Seo、Young Keun Chung
DOI:10.1039/c6gc02934e
日期:——
Potassium phosphate was found to be a highly active catalyst in the three-component cycloaddition of amine, epoxide, and carbondioxide in DMF at ambient temperature to form 3-aryl-2-oxazolidinones. Atmospheric CO2...
Vanadium<sup>V</sup>(salen) catalysed synthesis of oxazolidinones from epoxides and isocyanates
作者:Christopher Beattie、Michael North
DOI:10.1039/c4ra04427d
日期:——
vanadiumV(salen) complex V+O(salen) EtOSO3− and tetrabutylammonium bromide forms a highly active catalyst system for the reaction between epoxides and isocyanates leading to oxazolidinones. The reaction conditions were optimized and the optimal conditions (80 °C in toluene for 5 hours with 2 mol% of vanadium catalyst and 2 mol% of tetrabutylammonium bromide cocatalyst) applied to eight epoxides and six aromatic