151479-17-3

Upstream product

• 55166-13-7 1,1-bis(3,5-di-tert-butylphenyl)hydrazine 
• 4521-61-3 3,4,5-Trimethoxybenzoyl chloride 
• 15181-11-0 3, 5-di-tert-butyltoluene 
• 37055-49-5 bis-3,3’,5,5’-tetra-tert-butyldiphenylamine 
• 108-88-3 toluene 
• 2380-36-1 3,5-di-tert-butylaniline 
• 16225-26-6 3,5-di-tert-butylbenzoic acid 
• 55166-12-6 C₂₈H₄₂N₂O 

Relevant academic research and scientific papers

VARIABLE TEMPERATURE ESR SPECTRA OF 1-(3,4,5-TRIMETHOXY-BENZOYL)-2,2-BIS(3,5-DI-TERT-BUTYL-PHENYL)HYDRAZYL AND ITS 1-(15)N-CONGENER

The title free radicals were obtained by oxidation of the corresponding hydrazines which were synthesized and characterized by elemental analysis, IR and 1H-NMR spectra. The ESR spectra of the free radicals were recorded in toluene in the temperature range -50 deg C to +90 deg C. The simulated ESR spectra indicate a higher spin density at the tricoordinated N-2 nitrogen of the diarylamino group (hfc aN = 0.862 mT) than at the dicoordinated N-1 nitrogen atom (hfc aN = 0.830 mT). In the temperature range 0 deg C to 30 deg C the activation free energy for interconversion of conformers was determined to be ΔG(excit.) = 7.80 kcal/mol.