Ethanolamine → HCID 178433883, compound

HRID 415958Notes

Reaction equation

HRID 415958 reaction equation
[CH3:1][C:2]1[CH:3]=[C:4]([N:9]2[C:13](=[O:14])/[C:12](=[N:15]\[NH:16][C:17]3[C:18]([OH:32])=[C:19]([C:23]4[CH:28]=[CH:27][CH:26]=[C:25]([C:29]([OH:31])=[O:30])[CH:24]=4)[CH:20]=[CH:21][CH:22]=3)/[C:11]([CH3:33])=[N:10]2)[CH:5]=[CH:6][C:7]=1[CH3:8].[CH2:34]([CH2:36][NH2:37])[OH:35]>C1COCC1>[CH2:13]([CH2:12][NH2:15])[OH:14].[CH2:34]([CH2:36][NH2:37])[OH:35].[CH3:1][C:2]1[CH:3]=[C:4]([N:9]2[C:13](=[O:14])/[C:12](=[N:15]\[NH:16][C:17]3[C:18]([OH:32])=[C:19]([C:23]4[CH:28]=[CH:27][CH:26]=[C:25]([C:29]([OH:31])=[O:30])[CH:24]=4)[CH:20]=[CH:21][CH:22]=3)/[C:11]([CH3:33])=[N:10]2)[CH:5]=[CH:6][C:7]=1[CH3:8]

Participants

4

Reactant 2

HCID 700EthanolamineHCID 178433880HCID 178433880, compound

Product 1

HCID 178433883HCID 178433883, compound

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

3′-[(2Z)-[1-(3,4-dimethylphenyl)-1,5-dihydro-3-methyl-5-oxo-4H-pyrazol-4-ylidene]hydrazino]-2′-hydroxy-[1,1′-biphenyl]-3-carboxylic acid, 8 g of crude orange solid, was dissolved at room temperature in THF (240 ml) in a 500 ml round bottom 3-necked flask under a nitrogen atmosphere. Ethanolamine (2.2 ml, 2 molar equivalents) was added via syringe over 5 minutes. The resulting dark red suspension was stirred at room temperature for 1.5 hours and the solid isolated by filtration, washed with THF (16 ml×2) and dried at 50° C. in a vacuum oven over night to yield 10.37 g of the title compound (more than quantitative yield due to residual solvent—approximately 2.4% w/w THF as determined by NMR, otherwise similar to Example 1).

Workup

  1. customthe solid isolated by filtration
  2. washwashed with THF (16 ml×2)
  3. customdried at 50° C. in a vacuum oven over night

Sources & evidence

ORD record
ord-01e98feec5004197ba2db6d8c312ac3c
Source dataset
uspto-grants-2012_01
Patent number
US08088813B2

Reaction notes

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