Smith DL, Chidipudi SR, Goundry WR, Lam HW. Rhodium-catalyzed [2 + 2] cycloaddition of ynamides with nitroalkenes.
Org Lett 2012;
14:4934-7. [PMID:
22954424 DOI:
10.1021/ol302259v]
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Abstract
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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