83516-74-9

Upstream product

• 35990-92-2 4,5-Dihydro-6-(α-styryl)pyridazin-3(2H)-one 
• 100-52-7 benzaldehyde 
• 83516-65-8 6-(α-Styryl)pyridazin-3(2H)-one 
• 77-78-1 dimethyl sulfate 

Downstream Products

• 115984-25-3 (1α,2α,3β,4β)-1,3-Bis(6-chlor-3-pyridazinyl)-2,4-diphenylcyclobutan 

Relevant academic research and scientific papers

Photoreactions in Crystals with Ethenes: Selectivities and Crystal Engineering

Photoreactions in crystals of sterically hindered dimethylenecyclopentanones 1 and trimethylenecyclopentanes 4 lead to E/Z isomerizations and 1,5-H shifts.The stereochemical result of the photodimerization in the crystalline state of the heterostilbenes 6

Synthesis of 6-(α-Styryl)pyridazin-3(2H)-ones

6-(α-Styryl)pyridazin-3(2H)-ones (1a-c) have been prepared by the action of SeO2 on 4,5-dihydro derivatives (2) in ethanol.This method has also been applied successfully in the synthesis of 6-arylpyridazin-3(2H)-ones (1d-f). 4-Substituted 6-(α-styryl)pyridazin-3(2H)-ones (6) have been readily obtained by the base-catalysed condensation of 2 with aromatic aldehydes.The reactions of 1 with dimethyl sulphate and POCl3 are also described.