Rhodium-Catalyzed [2+2] Cycloaddition of Ynamides with Nitroalkenes

[摘要]：In the presence of a diene-ligated rhodium complex, ynamides and nitroalkenes undergo catalytic [2 + 2] cycloadditions to provide cyclobutenamides. The presence of sodium tetraphenylborate was found to be crucial for the reactions to proceed efficiently.

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