Copper on iron promoted one-pot synthesis of β-aminoenones and 3,5-disubstituted pyrazoles
摘要:
The reaction of hydroximoyl chlorides with acetylenes in the presence of a copper on iron bimetallic system leads to beta-aminoenones via reductive ring opening of isoxazole intermediates. The valuable beta-aminoenone building blocks can be isolated or transformed into pyrazoles with the addition of hydrazine in a straightforward one-pot procedure. (C) 2013 Elsevier Ltd. All rights reserved.
Copper on iron promoted one-pot synthesis of β-aminoenones and 3,5-disubstituted pyrazoles
摘要:
The reaction of hydroximoyl chlorides with acetylenes in the presence of a copper on iron bimetallic system leads to beta-aminoenones via reductive ring opening of isoxazole intermediates. The valuable beta-aminoenone building blocks can be isolated or transformed into pyrazoles with the addition of hydrazine in a straightforward one-pot procedure. (C) 2013 Elsevier Ltd. All rights reserved.