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Formamide → Acetamide, N-(2-(2-(2-cyano-4,6-dinitrophenyl)diazenyl)-5-(diethylamino)phenyl)-

HRID 27679
Notes
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Reaction equation

HRID 27679 reaction equation
Br[C:2]1[CH:7]=[C:6]([N+:8]([O-:10])=[O:9])[CH:5]=[C:4]([N+:11]([O-:13])=[O:12])[C:3]=1[N:14]=[N:15][C:16]1[CH:21]=[CH:20][C:19]([N:22]([CH2:25][CH3:26])[CH2:23][CH3:24])=[CH:18][C:17]=1[NH:27][C:28](=[O:30])[CH3:29].C([O-])(=O)C.[Na+].[CH:36]([NH2:38])=O.C(OC(=O)CC)(=O)CC>[Cu]I.C(OCCCC)(=O)C>[C:36]([C:2]1[CH:7]=[C:6]([N+:8]([O-:10])=[O:9])[CH:5]=[C:4]([N+:11]([O-:13])=[O:12])[C:3]=1[N:14]=[N:15][C:16]1[CH:21]=[CH:20][C:19]([N:22]([CH2:25][CH3:26])[CH2:23][CH3:24])=[CH:18][C:17]=1[NH:27][C:28](=[O:30])[CH3:29])#[N:38]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 4

HCID 713FormamideHCID 31263Propionic anhydrideHCID 104287Acetamide, N-[2-[2-(2-bromo-4,6-dinitrophenyl)diazenyl]-5-(diethylamino)phenyl]-HCID 517045Sodium Acetate

Product 1

HCID 90383Acetamide, N-(2-(2-(2-cyano-4,6-dinitrophenyl)diazenyl)-5-(diethylamino)phenyl)-Yield 83.5%

Reagents, catalysts & solvents

2
HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 31272Butyl AcetateSolvent

Conditions

Temperature
110 °C

Procedure

2-Bromo-4,6-dinitro-2'-acetylamino-4'-(N,N-diethylamino)azobenzene (2.4 parts), copper (I) iodide (0.95 parts), anhydrous sodium acetate (1.2 parts), formamide (1.8 parts), propionic anhydride (2.6 parts) and n-butyl acetate (44 parts) are mixed together are heated, with stirring, to 110° C. during 15 minutes. The temperature is maintained for 30 minutes when reaction is adjudged complete by thin layer chromatography. The mixture is cooled to room temperature and poured into petroleum ether (boiling range 60-80° C.) (400 parts). The precipitate is collected, washed with petroleum ether (100 parts) and dried. 2-cyano-4,6-dinitro-2'-acetylamino-4'-(N,N-diethylamino)azobenzene is obtained in 83.5% yield.

Workup

  1. temperatureare heated
  2. temperatureThe temperature is maintained for 30 minutes
  3. customwhen reaction
  4. temperatureThe mixture is cooled to room temperature
  5. customThe precipitate is collected
  6. washwashed with petroleum ether (100 parts)
  7. customdried

Sources & evidence

ORD record
ord-bd6608fb4bfe4cc9af4f818a4bca50c8
Source dataset
uspto-grants-1980_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US04222935

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes