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Acetic Acid → 2-(4-Chloro-2-oxo-1,2-dihydro-pyridin-3-yl)-6-(2-dimethylamino-1-methyl-ethyl)-1H-1,3,6-triaza-s-indacene-5,7-dione

HRID 561949
Notes
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Reaction equation

HRID 561949 reaction equation
[NH2:1][C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][C:10]=1[N+:11]([O-])=O)[C:7](=[O:14])[N:6]([CH:15]([CH3:20])[CH2:16][N:17]([CH3:19])[CH3:18])[C:5]2=[O:21].[CH3:22][C:23](O)=O.[ClH:26].[CH3:27][OH:28]>O1CCOCC1.O.[Pd]>[Cl:26][C:9]1[CH:10]=[CH:2][NH:1][C:27](=[O:28])[C:23]=1[C:22]1[NH:1][C:2]2[C:10]([N:11]=1)=[CH:9][C:8]1[C:7](=[O:14])[N:6]([CH:15]([CH3:20])[CH2:16][N:17]([CH3:19])[CH3:18])[C:5](=[O:21])[C:4]=1[CH:3]=2
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

8

Reactant 4

HCID 176Acetic AcidHCID 313Hydrochloric AcidHCID 887MethanolHCID 667934325-Amino-2-(2-dimethylamino-1-methyl-ethyl)-6-nitro-isoindole-1,3-dione

Product 1

HCID 1363511972-(4-Chloro-2-oxo-1,2-dihydro-pyridin-3-yl)-6-(2-dimethylamino-1-methyl-ethyl)-1H-1,3,6-triaza-s-indacene-5,7-dioneYield 80%

Reagents, catalysts & solvents

3
HCID 23938PalladiumCatalystHCID 962WaterSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
70 °C

Procedure

The mixture of 5-amino-2-(2-dimethylamino-1-methyl-ethyl)-6-nitro-isoindole-1,3-dione (585 mg, 2.0 mmol) and Pd/C (60 mg) in MeOH (95 mL) was stirred under atmospheric H2 for 2.5 h and filtered through Celite. The filtrate was mixed with 4-chloro-2-methoxynicotinic aldehyde (343.2 mg, 2.0 mmol) and HOAc (5 mL), stirred at the room temperature for 62 h, and evaporated under reduced pressure to afford an oil crude which was mixed with HCl in dioxane (4 M, 25 mL) and H2O (2 mL), heated at 70° C. for 1 h and evaporated. The residue was diluted with a mixed solvent of MeOH/DCM (50 mL/50 mL), basified with 28% aqueous NH4OH, and concentrated. Chromatography of the residue with CH2Cl2/MeOH/28% aqueous NH4OH (60:10:1) afforded the title compound (642 mg, 80%). 1H NMR (DMSO-d6) δ 1.39 (d, J=6 Hz, 3H, CH3), 2.14 (s, 6H, 2CH3), 2.29 (m, 1H), 3.04 (m, 1H), 4.40 (m, 1H), 6.59 (d, J=8 Hz, 1H), 7.69 (d, J=8 Hz, 1H), 8.04 (s, 1H), 8.05 (s, 1H); ESI-MS m/z 400.3 (MH+).

Workup

  1. filtrationfiltered through Celite
  2. stirringstirred at the room temperature for 62 h
  3. customevaporated under reduced pressure
  4. customto afford an oil crude which
  5. customevaporated
  6. additionThe residue was diluted with a mixed solvent of MeOH/DCM (50 mL/50 mL)
  7. concentrationconcentrated

Sources & evidence

ORD record
ord-0a98d606b0344dc18adf69fd61f8e63e
Source dataset
uspto-grants-2011_11
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08063225B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes