141244-75-9

Upstream product

• 32023-47-5 3-(5-nitrofuran-2-yl)-1-phenylprop-2-yn-1-one 
• 24310-15-4 α-naphthoxyacetylhydrazine 
• 4332-88-1 3-(5-nitrofuran-2-yl)-1-phenylprop-2-en-1-one 
• 38874-88-3 2,3-dibromo-3-(5-nitrofuran-2-yl)-1-phenylpropan-1-one 

Relevant academic research and scientific papers

Reactions of aryloxyacetylhydrazines with α,β-acetylinic ketones

Reactions of aryloxyacetyl hydrazines with 1-aryl-3-(5-nitro-2-furyl)-2-propyn-1-ones (3) yield 5-aryl-1-aryloxyacetyl-5-hydroxy-3-(5-nitro-2-furyl)-pyrazolines (4) rather than the expected pyrazoles (5).These hydroxypyrazolines have been subjected to acid-catalyzed dehydration.Dehydration using con. sulfuric acid in refluxing ethanol yields 5-aryl-3-(5-nitro-2-furyl)pyrazoles (6) while on stirring with a few drops of con. sulphuric acid in gl. acetic acid results in the formation of 5-aryl-1-aryloxyacetyl-3-(5-nitro-2-furyl)pyrazoles (5).