5-Amino-4-methyl-2-(1-methyl-piperidin-4-yl)-6-nitro-isoindole-1,3-dione → 5,6-Diamino-4-methyl-2-(1-methyl-piperidin-4-yl)-isoindole-1,3-dione

HRID 561907Notes

Reaction equation

HRID 561907 reaction equation
[NH2:1][C:2]1[C:3]([CH3:23])=[C:4]2[C:8](=[CH:9][C:10]=1[N+:11]([O-])=O)[C:7](=[O:14])[N:6]([CH:15]1[CH2:20][CH2:19][N:18]([CH3:21])[CH2:17][CH2:16]1)[C:5]2=[O:22]>[Pd].CO>[NH2:1][C:2]1[C:3]([CH3:23])=[C:4]2[C:8](=[CH:9][C:10]=1[NH2:11])[C:7](=[O:14])[N:6]([CH:15]1[CH2:16][CH2:17][N:18]([CH3:21])[CH2:19][CH2:20]1)[C:5]2=[O:22]

Participants

4

Reactant 1

HCID 597618595-Amino-4-methyl-2-(1-methyl-piperidin-4-yl)-6-nitro-isoindole-1,3-dione

Product 1

HCID 597617275,6-Diamino-4-methyl-2-(1-methyl-piperidin-4-yl)-isoindole-1,3-dioneYield 97.4%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 887MethanolSolvent

Procedure

To a suspension of 5-Amino-4-methyl-2-(1-methyl-piperidin-4-yl)-6-nitro-isoindole-1,3-dione (1.7 g, 5.34 mmol) and 10% Pd/C (250 mg) was added MeOH (100 mL) carefully and evacuated in vacuo. The flask was filled with hydrogen under balloon pressure and stirred for 1 h. The reaction mixture was filtered and evaporated in vacuo to afford the crude 5,6-diamino-4-methyl-2-(1-methyl-piperidin-4-yl)-isoindole-1,3-dione (1.5 g, quant.), which was used as such for further reaction.

Workup

  1. customevacuated in vacuo
  2. additionThe flask was filled with hydrogen under balloon pressure
  3. filtrationThe reaction mixture was filtered
  4. customevaporated in vacuo

Sources & evidence

ORD record
ord-bafe9f1a58624c3197a43437b6b0dad9
Source dataset
uspto-grants-2011_11
Patent number
US08063225B2

Reaction notes

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