15138-30-4

Basic information

• Product Name: 3,5-ditert-butyl-4'-nitro[1,1'-biphenyl]-4-ol
• Synonyms: 3,5-ditert-butyl-4'-nitro[1,1'-biphenyl]-4-ol
• CAS NO: 15138-30-4
• Molecular Formula: C₂₀H₂₅NO₃
• Molecular Weight: 327.4174
• Mol File: 15138-30-4.mol
• Article Data: 3

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 3,5-ditert-butyl-4'-nitro[1,1'-biphenyl]-4-ol(CAS DataBase Reference)
• NIST Chemistry Reference: 3,5-ditert-butyl-4'-nitro[1,1'-biphenyl]-4-ol(15138-30-4)
• EPA Substance Registry System: 3,5-ditert-butyl-4'-nitro[1,1'-biphenyl]-4-ol(15138-30-4)

Safety Data

• Hazardous Substances Data: 15138-30-4(Hazardous Substances Data)

Upstream product

• 139428-53-8 2,6-di-tert-butyl-4-(4′-nitrophenyl)phenoxyl radical 
• 128-39-2 2,6-di-tert-butylphenol 
• 100-00-5 4-chlorobenzonitrile 
• 1310-73-2 sodium hydroxide 

Downstream Products

• 69217-48-7 2,6-Di-t-butyl-4-hydroxy-4-(4-nitrophenyl)-cyclohexadienon 

Relevant articles and documents

Protonation of a Cobalt Phenylazopyridine Complex at the Ligand Yields a Proton, Hydride, and Hydrogen Atom Transfer Reagent

Protonation of the Co(I) phenylazopyridine (azpy) complex [CpCo(azpy)] 2 occurs at the azo nitrogen of the 2-phenylazopyridine ligand to generate the cationic Co(I) complex [CpCo(azpyH)]+ 3 with no change in oxidation state at Co. The N-H bond of 3 exhibits diverse hydrogen transfer reactivity, as studies with a variety of organic acceptors demonstrate that 3 can act as a proton, hydrogen atom, and hydride donor. The thermodynamics of all three cleavage modes for the N-H bond (i.e., proton, hydride, and hydrogen atom) were examined both experimentally and computationally. The N-H bond of 3 exhibits a pKa of 12.1, a hydricity of ΔG°H- = 89 kcal/mol, and a bond dissociation free energy (BDFE) of ΔG°H? = 68 kcal/mol in CD3CN. Hydride transfer from 3 to the trityl cation (ΔG°H- = 99 kcal/mol) is exergonic but takes several hours to reach completion, indicating that 3 is a relatively poor hydride donor, both kinetically and thermodynamically. Hydrogen atom transfer from 3 to 2,6-di-tert-butyl-4-(4′-nitrophenyl)phenoxyl radical (tBu2NPArO·, ΔG°H? = 77.8 kca/mol) occurs rapidly, illustrating the competence of 3 as a hydrogen atom donor.

Polyetherimides and their production

The polyetherimides have repeating groups which may be represented by the general formula: STR1 They are produced from novel monomers of the formula STR2 Synthesis procedures for forming such monomers are also described.