Sodium Azide → 6-Azido-4-(4-bromo-2-chlorophenylamino)nicotinic acid tert-butyl ester

HRID 1788239Notes

Reaction equation

HRID 1788239 reaction equation
[N-:1]=[N+:2]=[N-:3].[Na+].[C:5]([O:9][C:10](=[O:27])[C:11]1[C:16]([NH:17][C:18]2[CH:23]=[CH:22][C:21]([Br:24])=[CH:20][C:19]=2[Cl:25])=[CH:15][C:14](Cl)=[N:13][CH:12]=1)([CH3:8])([CH3:7])[CH3:6]>CN(C=O)C.CCOC(C)=O>[C:5]([O:9][C:10](=[O:27])[C:11]1[C:16]([NH:17][C:18]2[CH:23]=[CH:22][C:21]([Br:24])=[CH:20][C:19]=2[Cl:25])=[CH:15][C:14]([N:1]=[N+:2]=[N-:3])=[N:13][CH:12]=1)([CH3:8])([CH3:6])[CH3:7]

Participants

5

Reactant 2

HCID 33557Sodium AzideHCID 865967784-(4-Bromo-2-chlorophenylamino)-6-chloronicotinic acid tert-butyl ester

Product 1

HCID 865967796-Azido-4-(4-bromo-2-chlorophenylamino)nicotinic acid tert-butyl esterYield 43%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
80 °C

Procedure

Sodium azide (1.51 g, 23.2 mmol) was added to a mixture of 4-(4-bromo-2-chlorophenylamino)-6-chloronicotinic acid tert-butyl ester (40) (3.23 g, 7.73 mmol) in DMF (60 mL). The reaction mixture was heated to 80° C. and stirred for 16 hours. After cooling to room temperature, the reaction was diluted with EtOAc and washed with water, saturated NaHCO3 and brine. The organic layer was dried (Na2SO4) and concentrated. Purification by flash column chromatography using the Biotage system (CH2Cl2) (repeated) provided the desired product (41) (1.41 g, 43%).

Workup

  1. temperatureAfter cooling to room temperature
  2. washwashed with water, saturated NaHCO3 and brine
  3. dry with materialThe organic layer was dried (Na2SO4)
  4. concentrationconcentrated
  5. customPurification by flash column chromatography

Sources & evidence

ORD record
ord-66f9147db8fa4f9fbe1e5ca3da680ae5
Source dataset
uspto-grants-2009_03
Patent number
US07511058B2

Reaction notes

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