Triethylamine → 3,5-bis-(1,1-dimethylethyl)-4-hydroxy-N-[(4-nitrophenyl)methyl]-benzamide

HRID 1250061Notes

Reaction equation

HRID 1250061 reaction equation
Cl.[N+:2]([C:5]1[CH:12]=[CH:11][C:8]([CH2:9][NH2:10])=[CH:7][CH:6]=1)([O-:4])=[O:3].[C:13]([C:17]1[CH:18]=[C:19]([CH:23]=[C:24]([C:27]([CH3:30])([CH3:29])[CH3:28])[C:25]=1[OH:26])[C:20](O)=[O:21])([CH3:16])([CH3:15])[CH3:14].C(N(CC)CC)C.C1(N=C=NC2CCCCC2)CCCCC1>C1COCC1>[CH3:30][C:27]([C:24]1[CH:23]=[C:19]([CH:18]=[C:17]([C:13]([CH3:16])([CH3:15])[CH3:14])[C:25]=1[OH:26])[C:20]([NH:10][CH2:9][C:8]1[CH:7]=[CH:6][C:5]([N+:2]([O-:4])=[O:3])=[CH:12][CH:11]=1)=[O:21])([CH3:28])[CH3:29]

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 10868DicyclohexylcarbodiimideHCID 150073,5-Di-tert-butyl-4-hydroxybenzoic acidHCID 112524674-Nitrobenzylamine hydrochloride

Product 1

HCID 219185543,5-bis-(1,1-dimethylethyl)-4-hydroxy-N-[(4-nitrophenyl)methyl]-benzamideYield 74%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

1.88 g (10 mmoles) of p-nitrobenzylamine hydrochloride, 2.5 g (10 mmoles) of 3,5-di-tert-butyl-4-hydroxybenzoic acid, 1.38 ml (10 mmoles) of triethylamine and 2.26 g (11 mmoles) of dicyclohexylcarbodiimide are introduced into a 250 ml flask containing 25 ml of THF. The reaction medium is agitated for 15 hours at ambient temperature, the precipitate which appears is filtered out and rinsed with the minimum quantity of ethyl acetate. After concentration of the solution under reduced pressure, the residue is precipitated from a mixture of ethyl acetate/diethyl ether (1/4) and filtered. The crystals are washed abundantly with diethyl ether in order to finally produce, after drying, a white powder with a yield of 74% (2.85 g). Melting point: 230-231° C.

Workup

  1. filtrationthe precipitate which appears is filtered out
  2. washrinsed with the minimum quantity of ethyl acetate
  3. customAfter concentration of the solution under reduced pressure, the residue is precipitated from a mixture of ethyl acetate/diethyl ether (1/4)
  4. filtrationfiltered
  5. washThe crystals are washed abundantly with diethyl ether in order
  6. customto finally produce
  7. customafter drying

Sources & evidence

ORD record
ord-f13592e4e7b241c1bba500339de73463
Source dataset
uspto-grants-2002_01
Patent number
US06335445B1

Reaction notes

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