Regioselectivity and selective enhancement of carbon dioxide fixation of 2-substituted aziridines to 2-oxazolidinones under supercritical conditions
作者:Hajime Kawanami、Yutaka Ikushima
DOI:10.1016/s0040-4039(02)00676-7
日期:2002.5
Under supercritical CO2 conditions, regioselectivity in the carbon dioxide fixation of 2-substituted aziridines to 2-oxazolidinones was observed with good yields around 75%. Furthermore, when propylene imine was used in the place of aziridine, the yield was significantly and selectively increased around the critical pressure, and the maximum yield was obtained at 11.8 MPa. The turnover frequency (TOF)
在超临界CO 2条件下,观察到2-取代的氮丙啶在二氧化碳中固定为2-恶唑烷酮的区域选择性,产率约为75%。此外,当使用丙烯亚胺代替氮丙啶时,产率在临界压力附近显着且选择性地增加,并且在11.8MPa下获得最大产率。在此压力下的周转频率(TOF)是迄今报道的在6.9 MPa的乙醇中获得的TOF的2.1倍。