A novel synthesis of oxazolidine-2,4-diones via an efficient fixation of CO<sub>2</sub>with 3-aryl-2-alkynamides
作者:Guofei Chen、Chunling Fu、Shengming Ma
DOI:10.1039/c0ob00550a
日期:——
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.
Organocatalyzed carboxylative cyclization of propargylic amides with atmospheric CO<sub>2</sub> towards oxazolidine-2,4-diones
作者:Hui Zhou、Sen Mu、Bai-Hao Ren、Rui Zhang、Xiao-Bing Lu
DOI:10.1039/c8gc03929a
日期:——
The metal-free carboxylative cyclization of propargylicamides with CO2 to oxazolidine-2,4-diones was achieved for the first time employing 1,5,7-triaza-bicyclo-[4.4.0]dec-5-ene (TBD) as an organocatalyst. This method allows for the efficient and selective synthesis of a variety of (Z) 5-alkylidene 1,3-oxazolidine-2,4-diones, and a variety of functional groups are well-tolerated under mild reaction
Silver-catalyzed carbon dioxide incorporation into propargylic amides
作者:Seiya Uema、Nao Kojima、Tohru Yamada
DOI:10.1093/chemle/upae001
日期:2024.3.1
synthesis of oxazolidine-2,4-diones by silver-catalyzed CO2 incorporation into propargylic amides under base-free mild reaction conditions was developed. These conditions were applied to a variety of aryl- and alkyl-substituted propargylic amides to afford the corresponding oxazolidine-2,4-diones in high yields. Combined with iodination during the CO2 incorporation reaction, the present reaction was successfully
开发了一种在无碱温和反应条件下通过银催化的 CO2 掺入炔丙酰胺合成噁唑烷-2,4-二酮的方法。将这些条件应用于各种芳基和烷基取代的炔丙酰胺,以高产率得到相应的噁唑烷-2,4-二酮。结合 CO2 掺入反应过程中的碘化反应,本反应成功应用于农药己酮的合成。
Chemical fixation of carbon dioxide by copper catalyzed multicomponent reactions for oxazolidinedione syntheses
作者:Siddharth Sharma、Ajay K. Singh、Devendra Singh、Dong-Pyo Kim
DOI:10.1039/c4gc02089h
日期:——
The quest to reduce greenhouse gases has triggered the development of new chemical fixation of carbon dioxide.