Triethylamine → HCID 18415562, compound

HRID 342488Notes

Reaction equation

HRID 342488 reaction equation
[CH2:1]([O:8][N:9]1[C:18]2[C:13](=[CH:14][CH:15]=[C:16]([C:19]([OH:21])=O)[CH:17]=2)[NH:12][C:11](=[O:22])[C:10]1=[O:23])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.ON1C2C=CC=CC=2N=N1.Cl.CN(C)CCCN=C=NCC.Cl.[CH2:47]([O:54][NH2:55])[C:48]1[CH:53]=[CH:52][CH:51]=[CH:50][CH:49]=1.C(N(CC)CC)C>CN(C)C=O>[CH2:1]([O:8][N:9]1[C:18]2[C:13](=[CH:14][CH:15]=[C:16]([C:19](=[O:21])[NH:55][O:54][CH2:47][C:48]3[CH:53]=[CH:52][CH:51]=[CH:50][CH:49]=3)[CH:17]=2)[NH:12][C:11](=[O:22])[C:10]1=[O:23])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

7

Reactant 5

HCID 8471TriethylamineHCID 757711-HydroxybenzotriazoleHCID 102312Benzyloxyamine hydrochlorideHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 18415564HCID 18415564, compound

Product 1

HCID 18415562HCID 18415562, compoundYield 51.5%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To an ice-cooled solution of 1-Benzyloxy-7-carboxyquinoxaline-2,3(1H,4H)-dione (422 mg, 1.35 mmol) in 10 ml of N,N-dimethylformamide was added 1-hydroxybenzotriazole (218 mg, 1.48 mmol) followed by 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (272 mg, 1.42 mmol). Stirring was continued for 30 min at 0° C. and O-benzylhydroxylamine hydrochloride (237 mg, 1.49 mmol) and dry triethylamine (0.21 ml, 1.5 mmol) was added. The mixture was stirred overnight at room temperature, then cooled and filtered. The isolated solid was successively washed with water, saturated aqueous sodium hydrogen carbonate and water. Recrystallisation from ethanol gave 290 mg (51%) of the title compound. 1H-NMR (DMSO-d6): 4.95 (s, 2H, CH2), 5.19 (s, 2H, CH2), 7.2-7.8 (m, 13H, ArH), 11.8 (br.s, 1H, exchangeable), 12.3 (br.s, 1H, exchangeable).

Workup

  1. stirringThe mixture was stirred overnight at room temperature
  2. temperaturecooled
  3. filtrationfiltered
  4. washThe isolated solid was successively washed with water, saturated aqueous sodium hydrogen carbonate and water
  5. customRecrystallisation from ethanol

Sources & evidence

ORD record
ord-463a36a4a1f54ce89519627e524632bd
Source dataset
uspto-grants-1999_01
Patent number
US05859010

Reaction notes

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