128791-93-5

Upstream product

• 4440-01-1 lithium phenylacetylide 
• 52085-11-7 2-hydroxy-4-iso-propyloxybenzaldehyde 

Downstream Products

• 93875-73-1 7-isopropoxy-2-phenyl-chromen-4-one 
• 128791-94-6 6-Isopropoxy-2-[1-phenyl-meth-(Z)-ylidene]-benzofuran-3-one 

Relevant academic research and scientific papers

Intramolecular Cyclisation Catalysed by Silver(I) Ion; a Convenient Synthesis of Aurones

Silver(I) ion catalysed intramolecular cyclisation of (1a-d) at room temperature gives corresponding aurone (2a-d) as the major product with a trace amount of the flavone; compounds (1a-d) could be prepared by the addition of the corresponding lithium acetylide (4a-b) to the substituted salicyl aldehyde (5a-c), followed by MnO2 oxidation.