A One-Pot Iodo-Cyclization/Transition Metal-Catalyzed Cross-Coupling Sequence: Synthesis of Substituted Oxazolidin-2-ones from <i>N</i>-Boc-allylamines
作者:Pauline Chaumont-Olive、Janine Cossy
DOI:10.1021/acs.orglett.0c01114
日期:2020.5.15
metal-catalyzed cross-coupling sequence is reported to access various C5-functionalized oxazolidin-2-onesfrom unsaturated N-Boc-allylamines. Depending on the Grignard reagents used for the cross-coupling, e.g., aryl- or cyclopropylmagnesium bromide, a cobalt or copper catalyst has to be used to obtain the functionalized oxazolidin-2-ones in good yields.
Abstract An efficient one‐pot general method for the high‐yield synthesis in solution of oxazolidinones and oxazinones from allyl‐ and homoallylamines, respectively, has been developed. The reaction is carried out at an atmospheric pressure between 0°C and room temperature using a solution of carbon dioxide in acetonitrile and hindered guanidine as the base.