Conversion of Carbon Dioxide into Oxazolidinones Mediated by Quaternary Ammonium Salts and DBU
作者:Min Lv、Peng Wang、Dan Yuan、Yingming Yao
DOI:10.1002/cctc.201700594
日期:2017.12.20
A straightforward method to construct oxazolidinones through a three‐component reaction involving CO2, epoxides, and amines promoted by a combination of Bu4NI and 1,8‐diazabicyclo[5.4.0]undec‐7‐ene was developed. A wide range of aromatic and aliphatic amines and monosubstituted epoxides were converted into 3,5‐disubstituted‐2‐oxazolidines in up to 95 % yield. This metal‐free and easily available catalytic
开发了一种简单的方法,通过Bu 4 NI和1,8-二氮杂双环[5.4.0] undec-7-ene的组合促进的涉及CO 2,环氧化物和胺的三组分反应来构建恶唑烷酮。各种各样的芳香族和脂肪族胺以及单取代的环氧化物以高达95%的产率转化为3,5-二取代-2-恶唑烷。这种无金属且易于获得的催化体系可在大气压下适用于多种基材,包括传统上具有挑战性的基材,例如脂族环氧化物。初步的机理研究表明,涉及β-氨基醇的反应途径。