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Ammonium Chloride → 4-[4-(6-cyanopyridin-3-yl)-9H-carbazol-9-yl]-2-[(1,2,2,6,6-pentamethylpiperidin-4-yl)amino]benzamide

HRID 1877515
Notes
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Reaction equation

HRID 1877515 reaction equation
F[P-](F)(F)(F)(F)F.[N:8]1(O[P+](N(C)C)(N(C)C)N(C)C)C2C=CC=CC=2N=N1.OC1C2N=NNC=2C=CC=1.[Cl-].[NH4+].C(N(C(C)C)CC)(C)C.[C:49]([C:51]1[N:56]=[CH:55][C:54]([C:57]2[C:69]3[C:68]4[C:63](=[CH:64][CH:65]=[CH:66][CH:67]=4)[N:62]([C:70]4[CH:78]=[CH:77][C:73]([C:74]([OH:76])=O)=[C:72]([NH:79][CH:80]5[CH2:85][C:84]([CH3:87])([CH3:86])[N:83]([CH3:88])[C:82]([CH3:90])([CH3:89])[CH2:81]5)[CH:71]=4)[C:61]=3[CH:60]=[CH:59][CH:58]=2)=[CH:53][CH:52]=1)#[N:50]>CN(C)C=O.O>[C:49]([C:51]1[N:56]=[CH:55][C:54]([C:57]2[C:69]3[C:68]4[C:63](=[CH:64][CH:65]=[CH:66][CH:67]=4)[N:62]([C:70]4[CH:78]=[CH:77][C:73]([C:74]([NH2:8])=[O:76])=[C:72]([NH:79][CH:80]5[CH2:81][C:82]([CH3:89])([CH3:90])[N:83]([CH3:88])[C:84]([CH3:87])([CH3:86])[CH2:85]5)[CH:71]=4)[C:61]=3[CH:60]=[CH:59][CH:58]=2)=[CH:53][CH:52]=1)#[N:50]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

8

Reactant 5

HCID 25517Ammonium ChlorideHCID 81531DiisopropylethylamineHCID 151348Benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphateHCID 673095014-[4-(6-cyanopyridin-3-yl)-9H-carbazol-9-yl]-2-[(1,2,2,6,6-pentamethylpiperidin-4-yl)amino]benzoic acidHCID 178418300HCID 178418300, compound

Product 1

HCID 58338191
4-[4-(6-cyanopyridin-3-yl)-9H-carbazol-9-yl]-2-[(1,2,2,6,6-pentamethylpiperidin-4-yl)amino]benzamide
Yield 21.5%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

330 mg of (1H-benzotriazol-1-yloxy)[tris(dimethylamino)]phosphonium hexafluorophosphate (BOP), 100 mg of hydroxybenzotriazole (HOBT), 54 mg of ammonium chloride and 0.41 ml of diisopropylethylamine are successively added to a solution of 280 mg of 4-[4-(6-cyanopyridin-3-yl)-9H-carbazol-9-yl]-2-[(1,2,2,6,6-pentamethylpiperidin-4-yl)amino]benzoic acid in 30 ml of N,N-dimethylformamide. The reaction mixture is stirred at ambient temperature for 12 hours and then diluted with distilled water and extracted with ethyl acetate. The organic phase is subsequently washed with distilled water and a saturated solution of sodium chloride, dried over magnesium sulphate, filtered and concentrated under reduced pressure. The residue is purified by silica gel chromatography, elution being carried out with a mixture of dichloromethane, acetonitrile and methanol (85/7.5/7.5 by volume), so as to give 60 mg of 4-[4-(6-cyanopyridin-3-yl)-9H-carbazol-9-yl]-2-[(1,2,2,6,6-pentamethylpiperidin-4-yl)amino]benzamide in the form of a white solid, the characteristics of which are the following:

Workup

  1. extractionextracted with ethyl acetate
  2. washThe organic phase is subsequently washed with distilled water
  3. dry with materiala saturated solution of sodium chloride, dried over magnesium sulphate
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure
  6. customThe residue is purified by silica gel chromatography, elution
  7. additionbeing carried out with a mixture of dichloromethane, acetonitrile and methanol (85/7.5/7.5 by volume)

Sources & evidence

ORD record
ord-eb3f93bde58f45bda89c2c26cd3e3398
Source dataset
uspto-grants-2012_11
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08309721B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes