Matsuo H, Choi JC, Fujitani T, Fujita KI. Carboxylative Cyclization of a Propargylic Amine with CO
2 Catalyzed by a Silica-Coated Magnetite.
Chem Pharm Bull (Tokyo) 2021;
69:698-701. [PMID:
34193718 DOI:
10.1248/cpb.c21-00200]
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Abstract
By employing a silica-coated magnetite as a catalyst, a silica-catalyzed carboxylative cyclization of propargylic amines with carbon dioxide (CO2) proceeded to afford the corresponding 2-oxazolidinones. Moreover, after the reaction, the silica-coated magnetic catalyst was readily recovered by use of an external magnet and could be reused up to six times without deactivation.
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