4-(Trifluoromethyl)phenyl isocyanate → HCID 59454506, compound

HRID 455176Notes

Reaction equation

HRID 455176 reaction equation
[NH2:1][C:2]1[CH:3]=[C:4]([CH:23]=[CH:24][CH:25]=1)[O:5][C:6]1[CH:20]=[CH:19][C:9]2[N:10]=[C:11]([NH:13][C:14]([CH:16]3[CH2:18][CH2:17]3)=[O:15])[S:12][C:8]=2[C:7]=1[C:21]#[N:22].[N:26]([C:29]1[CH:34]=[CH:33][C:32]([C:35]([F:38])([F:37])[F:36])=[CH:31][CH:30]=1)=[C:27]=[O:28]>CN(C)C=O.C(OCC)(=O)C>[C:21]([C:7]1[C:8]2[S:12][C:11]([NH:13][C:14]([CH:16]3[CH2:18][CH2:17]3)=[O:15])=[N:10][C:9]=2[CH:19]=[CH:20][C:6]=1[O:5][C:4]1[CH:23]=[CH:24][CH:25]=[C:2]([NH:1][C:27](=[O:28])[NH:26][C:29]2[CH:34]=[CH:33][C:32]([C:35]([F:36])([F:38])[F:37])=[CH:31][CH:30]=2)[CH:3]=1)#[N:22]

Participants

5

Reactant 2

HCID 737684-(Trifluoromethyl)phenyl isocyanateHCID 86644685N-[6-(3-aminophenoxy)-7-cyano-1,3-benzothiazol-2-yl]cyclopropanecarboxamide

Product 1

HCID 59454506HCID 59454506, compoundYield 94.1%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

N-[6-(3-Aminophenoxy)-7-cyano-1,3-benzothiazol-2-yl]cyclopropanecarboxamide (120 mg, 0.342 mmol) produced in Example 3(vi) was dissolved in N,N-dimethylformamide (2 mL), 1-isocyanato-4-(trifluoromethyl)benzene (63 mg, 0.445 mmol) was added, and the mixture was stirred at room temperature for 12 hr. The reaction mixture was diluted with ethyl acetate (10 mL), washed successively with saturated aqueous sodium hydrogen carbonate solution (5 ml) and saturated brine (5 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 basic silica gel column chromatography (methanol/ethyl acetate=0/100→5/95). The obtained solution was concentrated under reduced pressure to give the title compound (173 mg, 94%) as a white powder.

Workup

  1. washwashed successively with saturated aqueous sodium hydrogen carbonate solution (5 ml) and saturated brine (5 mL)
  2. dry with materialdried over anhydrous sodium sulfate
  3. filtrationInsoluble material was filtered off
  4. concentrationthe filtrate was concentrated under reduced pressure
  5. customThe obtained residue was purified by basic silica gel column chromatography (methanol/ethyl acetate=0/100→5/95)
  6. concentrationThe obtained solution was concentrated under reduced pressure

Sources & evidence

ORD record
ord-2ec2a03e7bd748b1a78e52257e6113ef
Source dataset
uspto-grants-2013_07
Patent number
US08497274B2

Reaction notes

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