Imidazolium and Potassium Hydrogen Carbonate Salts as Ecofriendly Organocatalysts for Oxazolidinone Synthesis
作者:Antoine H. Fournier、Guillaume de Robillard、Charles H. Devillers、Laurent Plasseraud、Jacques Andrieu
DOI:10.1002/ejoc.201600550
日期:2016.7
reagents/catalysts that are hazardous or toxic to human health or ecotoxic for the environment. In this manuscript, we describe new and efficient catalysts, that is, the nontoxic hydrogen carbonate anion in combination with a potassium or diisobutylimidazolium ([iBu(2)IM]) countercation, for the conversion of -amino alcohols into cyclic oxazolidinones in high yields of 69 to 90%. Depending on the catalytic
尽管恶唑烷酮是用于工业应用的有价值的中间体化合物,但由于使用对人类健康有害或有毒或对环境具有生态毒性的试剂/催化剂,没有合成方法适合大规模生产它们。在本手稿中,我们描述了新型高效催化剂,即无毒碳酸氢根阴离子与钾或二异丁基咪唑鎓 ([iBu(2)IM]) 抗衡阳离子相结合,用于将 - 氨基醇以高产率转化为环状恶唑烷酮69% 到 90%。根据催化条件,两种催化剂都可以很容易地从粗反应产物中回收并重复使用多次,而不会降低其催化性能。此外,咪唑鎓阳离子是一种可再生的催化剂,