Oxalyl chloride → 2-(2-Bromo-2-(4-fluorophenyl)acetamido)-4-fluorobenzamide

HRID 1801900Notes

Reaction equation

HRID 1801900 reaction equation
[Br:1][CH:2]([C:6]1[CH:11]=[CH:10][C:9]([F:12])=[CH:8][CH:7]=1)[C:3]([OH:5])=O.C(Cl)(=O)C(Cl)=O.[NH2:19][C:20]1[CH:28]=[C:27]([F:29])[CH:26]=[CH:25][C:21]=1[C:22]([NH2:24])=[O:23]>C(Cl)Cl.CN(C=O)C.N1C=CC=CC=1>[Br:1][CH:2]([C:6]1[CH:11]=[CH:10][C:9]([F:12])=[CH:8][CH:7]=1)[C:3]([NH:19][C:20]1[CH:28]=[C:27]([F:29])[CH:26]=[CH:25][C:21]=1[C:22]([NH2:24])=[O:23])=[O:5]

Participants

7

Reactant 3

HCID 65578Oxalyl chlorideHCID 102410042-Amino-4-fluorobenzamideHCID 16217752Bromo(4-fluorophenyl)acetic acid

Product 1

HCID 666108892-(2-Bromo-2-(4-fluorophenyl)acetamido)-4-fluorobenzamide

Reagents, catalysts & solvents 3

HCID 1049PyridineSolventHCID 6228DimethylformamideSolventHCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

To a solution of 2-bromo-2-(4-fluorophenyl)acetic acid (425 mg, 1.82 mmol) in DCM (5 mL) and DMF (0.05 mL) was added oxalyl chloride (0.17 mL, 1.91 mmol) and the solution was stirred for 0.75 h. The solution was then cooled to 0° C. and a solution of 2-amino-4-fluorobenzamide (267 mg, 1.73 mmol) in pyridine (1 mL) was added. The solution was stirred at rt for 1 h and then evaporated. The crude residue was partitioned between EtOAc and 2 N HCl. The EtOAc layer was evaporated to give 2-(2-bromo-2-(4-fluorophenyl)acetamido)-4-fluorobenzamide as a crude oil which was used without further purification. (420 mg, 62%). LC-MS (ESI) m/z 369 (M−H)−.

Workup

  1. stirringThe solution was stirred at rt for 1 h
  2. customevaporated
  3. customThe crude residue was partitioned between EtOAc and 2 N HCl
  4. customThe EtOAc layer was evaporated

Sources & evidence

ORD record
ord-a25ac392182f43aa86530b04050214ce
Source dataset
uspto-grants-2013_01
Patent number
US08349851B2

Reaction notes

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