В австралийской статье (Crank, G et al.,Aust. J. Chem.,1984, 37, 845, см. ниже) как раз используют сильный окислитель КО2 для превращения п-аминофенола в 4,4'-дигидроксиазобензол, а взрыв, говорят, произошел от перекиси ТГФ, образовавшейся под действием окислителя. Не используйте ТГФ или что-то, дающее перекиси и будете живы-здоровы
Entry Name: 4,4'-Dihydroxyazobenzene
Synonym(s): 4,4'-Azobisphenol, 9CI. 4,4'-Azodiphenol, 8CI. p-Azophenol. 4-[(4-Hydroxyphenyl)azo]phenol
Chapman Hall Number: BJR08-I
CAS Registry Number: 2050-16-0
Additional CAS Registry Number(s): 588-52-3, 122055-52-1
Structure by analogy with 2,2'-Dihydroxyazobenzene, #BJQ85
Molecular Formula: C12H10N2O2
Molecular Weight: M 214.223.
General Statement: Two forms known which may be tautomers.
Physical Description: Green powder or deep-red powder.
Melting Point: Mp 216 deg (both forms).
Supplier(s): Rare Chemicals Library S81951-4.
Derivative: Di-Ac
Chapman Hall Number: BJR09-J
Molecular Formula: C16H14N2O4
Molecular Weight: M 298.298.
Physical Description: Yellow prisms and needles (AcOH).
Melting Point: Mp 198-199 deg.
Derivative: Di-Ac, N-oxide
Chapman Hall Number: BJR20-G
CAS Registry Number: 79030-44-7
Molecular Formula: C16H14N2O5
Molecular Weight: M 314.297.
Physical Description: Orange needles (EtOH).
Melting Point: Mp 163 deg.
Derivative: Di-Me ether
Synonym(s): 4,4'-Dimethoxyazobenzene. 4,4'-Azodianisole. p,p'-Azoanisole
Chapman Hall Number: BJR10-D
CAS Registry Number: 501-58-6
Molecular Formula: C14H14N2O2
Molecular Weight: M 242.277.
Physical Description: Yellow leaflets and prisms (MeOH).
Melting Point: Mp 165 deg.
Derivative: Di-Me ether, N-oxide
Synonym(s): 4,4'-Dimethoxyazoxybenzene. 4,4'-Azoxydianisole
Chapman Hall Number: BJR21-H
CAS Registry Number: 1562-94-3
Molecular Formula: C14H14N2O3
Molecular Weight: M 258.276.
Physical Description: Yellow needles.
Melting Point: Mp 118-119 deg.
Other Data: Exhibits anisotropy. Liq. at 118 deg is turbid and clears at 135 deg; reverse changes shown on cooling.
RTECS Accession Number: >>HM2966500.
Supplier(s): Fluka 11643; Sigma A6884.
Derivative: Et ether
Synonym(s): 4'-Ethoxy-4-hydroxyazobenzene. 4-[(4-Ethoxyphenyl)azo]phenol, 9CI
Chapman Hall Number: KNJ38-A
CAS Registry Number: 2496-26-6
Type of Compound Code(s): PM6140, PS7850
Molecular Formula: C14H14N2O2
Molecular Weight: M 242.277.
Use/Importance: Used as 0.1% EtOH soln. as an acid-base indicator (pH 6.0-8.0; colour change: pale yellow->yellow).
Physical Description: Orange needles (EtOH).
Solubility: Sol. EtOH, Et2O, C6H6, CHCl3; insol. H2O.
Derivative: N-Oxide
Synonym(s): 4,4'-Dihydroxyazoxybenzene. 4,4'-Azoxybisphenol, 9CI. 4,4'-Azoxydiphenol, 8CI
Chapman Hall Number: BJR11-E, BJR19-M
CAS Registry Number: 15596-57-3
Molecular Formula: C12H10N2O3
Molecular Weight: M 230.223.
Physical Description: Reddish-yellow needles.
Melting Point: Mp 224 deg (dec.).
Supplier(s): Rare Chemicals Library S81950-6.
Derivative: Dihexyl ether, N-oxide
Chapman Hall Number: NSV82-H
CAS Registry Number: 2587-42-0
Molecular Formula: C24H34N2O3
Molecular Weight: M 398.544.
Physical Description: Pale yellow needles (EtOH aq.).
Melting Point: Mp 81 deg.
Other Data: Forms liq. cryst. with nematic to liq. transition point 128 deg.
Supplier(s): PB D26606.
References:
Aldrich Library of 13C and 1H FT NMR Spectra,3, 553C (nmr)
Aldrich Library of Infrared Spectra, 3rd edn.,1449F (ir)
Willstatter, R et al.,Ber.,1906, 39, 3492 (synth)
Davies, W et al.,J.C.S.,1929, 586 (derivs)
Cook, AH et al.,J.C.S.,1939, 1309 (synth)
Schulek, E et al.,Fresenius' Z. Anal. Chem.,1944, 128, 398 (use)
Leonard, NJ, J.O.C.,1952, 17, 1071 (derivs)
Brode, WR et al.,J.A.C.S.,1955, 77, 2762 (synth, uv)
Edwards, WR et al.,Anal. Chem.,1956, 28, 1045 (chromatog, spectra)
Dewar, MJS et al.,Tet. Lett.,1966, 2717 (dihexyl ether, oxide)
Fatiadi, AJ, J. Res. Natl. Bur. Stand., Sect. A,1967, 71, 227 (ir)
Tuzan, C et al.,CA,1968, 68, 49220 (derivs)
Gumprecht, DL et al.,J. Chromatogr.,1968, 37, 268 (chromatog)
Carlisle, CH et al.,Acta Cryst. B,1971, 27, 1068 (cryst struct, deriv)
Simon, D et al.,J. Mol. Struct.,1973, 19, 255 (uv)
Crank, G et al.,Aust. J. Chem.,1984, 37, 845 (synth)
Chebli, C et al.,Acta Cryst. C,1995, 51, 1164 (cryst struct, azoxydianisole)
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