| Abstract
| - The reactions of propargylamine derivatives with carbon dioxide and carbon disulfide have beensystematically examined in the presence of transition-metal catalysts. Pd(OAc)2 is the best catalystfor the formation of the corresponding oxazolidinones. In addition, we found that, in the reactionof propargylamine with carbon dioxide catalyzed by palladium(0) metal catalyst in toluene, bothoxazolidinone 1 and imidazolidinone 2 could be obtained under mild reaction conditions at thesame time. The reaction of 1 with primary and secondary amines has been examined. A plausiblereaction mechanism for the formation of 2 was proposed. In addition, in this paper, we first disclosedthe ligand's effect on this reaction. Using PBut3 as a ligand with Pd2(dba)3, 1 was exclusively formedin 90% yield.
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