Copper on iron promoted one-pot synthesis of β-aminoenones and 3,5-disubstituted pyrazoles
Journal article published in 2013 by
Szabolcs Kovács,
Zoltán Novák 
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Abstract
Reaction of hydroximoyl chlorides with acetylenes in the presence of a copper on iron bimetallic system leads to beta-enaminones via reductive ring opening of isoxazole intermediates. The valuable beta-enaminone building blocks can be isolated or transformed into pyrazoles with the addition of hydrazine in a straightforward one-pot procedure.