Dimethylformamide → HCID 59454466, compound

HRID 455196Notes

Reaction equation

HRID 455196 reaction equation
[Cl:1][C:2]1[C:10]([C:11]2([C:14]#[N:15])[CH2:13][CH2:12]2)=[CH:9][CH:8]=[CH:7][C:3]=1[C:4]([OH:6])=O.C(Cl)(=O)C(Cl)=O.CN(C)C=O.[NH2:27][C:28]1[C:29]([F:53])=[CH:30][C:31]([Cl:52])=[C:32]([CH:51]=1)[O:33][C:34]1[CH:48]=[CH:47][C:37]2[N:38]=[C:39]([NH:41][C:42]([CH:44]3[CH2:46][CH2:45]3)=[O:43])[S:40][C:36]=2[C:35]=1[C:49]#[N:50]>O1CCCC1.C(OCC)(=O)C>[Cl:1][C:2]1[C:10]([C:11]2([C:14]#[N:15])[CH2:13][CH2:12]2)=[CH:9][CH:8]=[CH:7][C:3]=1[C:4]([NH:27][C:28]1[CH:51]=[C:32]([O:33][C:34]2[CH:48]=[CH:47][C:37]3[N:38]=[C:39]([NH:41][C:42]([CH:44]4[CH2:46][CH2:45]4)=[O:43])[S:40][C:36]=3[C:35]=2[C:49]#[N:50])[C:31]([Cl:52])=[CH:30][C:29]=1[F:53])=[O:6]

Participants

7

Reactant 4

HCID 6228DimethylformamideHCID 65578Oxalyl chlorideHCID 668103062-Chloro-3-(1-cyanocyclopropyl)benzoic acidHCID 86644692N-[6-(5-amino-2-chloro-4-fluorophenoxy)-7-cyano-1,3-benzothiazol-2-yl]cyclopropanecarboxamide

Product 1

HCID 59454466HCID 59454466, compoundYield 57%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 2-chloro-3-(1-cyanocyclopropyl)benzoic acid (75 mg, 0.339 mmol) in tetrahydrofuran (2 mL) were added oxalyl chloride (36 μL, 0.427 mmol) and N,N-dimethylformamide (20 μL), and the mixture was stirred at room temperature for 2 hr. The reaction mixture was concentrated under reduced pressure, and the residue was dissolved in N,N-dimethylacetamide (2 mL). N-[6-(5-Amino-2-chloro-4-fluorophenoxy)-7-cyano-1,3-benzothiazol-2-yl]cyclopropanecarboxamide (100 mg, 0.248 mmol) was added to the solution, and the mixture was stirred at room temperature for 15 min. The reaction mixture was diluted with ethyl acetate (50 mL), washed successively with 5% aqueous sodium hydrogen carbonate solution (25 mL) and saturated brine (25 mL), and dried over anhydrous sodium sulfate. Insoluble material was filtered off, and the filtrate was concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (ethyl acetate/n-hexane=50/50→100/0), and the obtained solution was concentrated under reduced pressure. The residue was crystallized from diethyl ether to give the title compound (85 mg, 57%) as a white powder.

Workup

  1. concentrationThe reaction mixture was concentrated under reduced pressure
  2. dissolutionthe residue was dissolved in N,N-dimethylacetamide (2 mL)
  3. stirringthe mixture was stirred at room temperature for 15 min
  4. washwashed successively with 5% aqueous sodium hydrogen carbonate solution (25 mL) and saturated brine (25 mL)
  5. dry with materialdried over anhydrous sodium sulfate
  6. filtrationInsoluble material was filtered off
  7. concentrationthe filtrate was concentrated under reduced pressure
  8. customThe obtained residue was purified by silica gel column chromatography (ethyl acetate/n-hexane=50/50→100/0)
  9. concentrationthe obtained solution was concentrated under reduced pressure
  10. customThe residue was crystallized from diethyl ether

Sources & evidence

ORD record
ord-64165d8b1eae4f7195078eec2ea9679e
Source dataset
uspto-grants-2013_07
Patent number
US08497274B2

Reaction notes

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