5661-68-7

Upstream product

• 94801-46-4 N,N'-bis-(1-phenyl-ethyl)-hydrazine 
• 98-86-2 acetophenone 
• 7214-61-1 (1-nitroethyl)benzene 
• 613-91-2 acetophenone oxime 
• 729-43-1 acetophenonazine 

Downstream Products

• 28504-44-1 C₃₂H₃₄S₂ 
• 618-36-0 rac-methylbenzylamine 
• 94801-46-4 N,N'-bis-(1-phenyl-ethyl)-hydrazine 
• 98-86-2 acetophenone 
• 24292-42-0 (1-phenyl-ethyl)-hydrazine 
• 7100-97-2 1-fluoro-1-phenylethane 
• 98-85-1 1-Phenylethanol 
• 1857-74-5 2,3-diphenylbutane 
• 109757-73-5 1-nitro-2-phenylpropane 
• 4747-11-9 α-phenoxyethylbenzene 
• 60000-15-9 N-phenethyl-1-phenylethan-1-amine hydrochloride 
• 3480-59-9 N-(1-phenylethyl)benzamide 
• 1533-20-6 1,3-diphenylbutane-1-one 
• 154554-67-3 1-phenyl-1-(2',2',6',6'-tetramethyl-1'-piperidinyloxy)ethane 

Relevant academic research and scientific papers

ESR Studies on Chain Transfer Reactions: Rate Constants for the Reactions of Model Radicals of Polystyrene Growing Chain Ends with Tetrahalomethanes and Thiophenols

The absolute rate constants for reactions of the model radicals of the growing chain ends of styrene and methacrylonitrile with tetrahalomethanes and thiophenols were determined by spin-trapping methods using ESR spectroscopy.The model radicals were produ

Acid Is Key to the Radical-Trapping Antioxidant Activity of Nitroxides

Persistent dialkylnitroxides (e.g., 2,2,6,6-tetramethylpiperidin-1-oxyl, TEMPO) play a central role in the activity of hindered amine light stabilizers (HALS)-additives that inhibit the (photo)oxidative degradation of consumer and industrial products. The accepted mechanism of HALS comprises a catalytic cycle involving the rapid combination of a nitroxide with an alkyl radical to yield an alkoxyamine that subsequently reacts with a peroxyl radical to eventually re-form the nitroxide. Herein, we offer evidence in favor of an alternative reaction mechanism involving the acid-catalyzed reaction of a nitroxide with a peroxyl radical to yield an oxoammonium ion followed by electron transfer from an alkyl radical to the oxoammonium ion to re-form the nitroxide. In preliminary work, we showed that TEMPO reacts with peroxyl radicals at diffusion-controlled rates in the presence of acids. Now, we show that TEMPO can be regenerated from its oxoammonium ion by reaction with alkyl radicals. We have determined that this reaction, which has been proposed to be a key step in TEMPO-catalyzed synthetic transformations, occurs with k ～ 1-3 × 1010 M-1 s-1, thereby enabling it to compete with O2 for alkyl radicals. The addition of weak acids facilitates this reaction, whereas the addition of strong acids slows it by enabling back electron transfer. The chemistry is shown to occur in hydrocarbon autoxidations at elevated temperatures without added acid due to the in situ formation of carboxylic acids, accounting for the long-known catalytic radical-trapping antioxidant activity of TEMPO that prompted the development of HALS.

Transformations of 3-nitropyridin-4(1H)-one and 1-Methyl-3-nitropyridin- 4(1H)-one in reaction with hydrazine

Hydrazinolysis of 3-nitropyridin-4(1H)-one and its N-methyl derivative leads to the formation of 1-(1H-pyrazol-3-yl)ethanone hydrazone whose structure was confirmed by independent synthesis from authentic 3-acetyl-1H-pyrazole and comparison of the IR and