A very mild protocol for fixation of carbon dioxide with 2-alkynamides in DMSO at 30 °C using a CO2 balloon in the presence of K2CO3 has been developed, which leads to an efficient assembly of oxazolidine-2,4-diones. It is observed that the regioselectivity was controlled by the aryl group.
开发了一种温和的
二氧化碳固定化方案,在30°C下,于
DMSO中使用
CO2气球,并在K2CO3存在下,通过2-炔酰胺实现
二氧化碳的固定化,从而高效合成
噁唑烷-2,4-二酮。研究表明,区域选择性受芳基团的控制。