Diisopropylethylamine → 2-Chloro-N-(3-iodo-4-methylphenyl)pyridine-4-carboxamide

HRID 31412

Reaction equation

HRID 31412 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([CH:8]=[CH:9][N:10]=1)[C:5]([OH:7])=O.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.C(N(C(C)C)CC)(C)C.[I:44][C:45]1[CH:46]=[C:47]([CH:49]=[CH:50][C:51]=1[CH3:52])[NH2:48]>CN(C)C=O>[Cl:1][C:2]1[CH:3]=[C:4]([CH:8]=[CH:9][N:10]=1)[C:5]([NH:48][C:47]1[CH:49]=[CH:50][C:51]([CH3:52])=[C:45]([I:44])[CH:46]=1)=[O:7]

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 1188893-Iodo-p-toluidineHCID 2369852-Chloroisonicotinic acidHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)

Product 1

HCID 219145572-Chloro-N-(3-iodo-4-methylphenyl)pyridine-4-carboxamideYield 89.5%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

2-Chloroisonicotinic acid (3.3 g, 21 mmol), HATU (8.75 g, 23 mmol), diisopropylethyl amine (10.9 ml, 63 mmol) and 3-iodo-4-methylaniline (5.00 g, 21 mmol) in dimethylformamide (50 ml) were heated under nitrogen for 16 hours. The reaction was cooled, solvent removed in vacuo and the residue taken up in dichloromethane (150 ml). The organic solution was washed with water (3×100 ml) and brine (100 ml), dried over magnesium sulfate, filtered and solvent removed in vacuo. The residue was purified by column chromatography (40:60 ethyl acetate:cyclohexane) to give 2-chloro-N-(3-iodo-4-methylphenyl)-isonicotinamide as a white solid (7.00 g, 18.8 mmol).

Workup

  1. temperatureThe reaction was cooled
  2. customsolvent removed in vacuo
  3. washThe organic solution was washed with water (3×100 ml) and brine (100 ml)
  4. dry with materialdried over magnesium sulfate
  5. filtrationfiltered
  6. customsolvent removed in vacuo
  7. customThe residue was purified by column chromatography (40:60 ethyl acetate:cyclohexane)

Sources & evidence

ORD record
ord-d4e6a59278a04225b468bb83eac89466
Source dataset
uspto-grants-2008_09
Patent number
US07425555B2

Linked notes

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