Ammonium Chloride → HCID 57736411, compound

HRID 1641753Notes

Reaction equation

HRID 1641753 reaction equation
[CH3:1][C:2]1[C:7]([CH:8]([S:18]([C:21]2[CH:22]=[N:23][C:24]([C:27]([F:30])([F:29])[F:28])=[CH:25][CH:26]=2)(=[O:20])=[O:19])[C:9]2[C:14]([F:15])=[CH:13][CH:12]=[C:11]([F:16])[C:10]=2[F:17])=[CH:6][N:5]=[C:4]([C:31]([OH:33])=O)[CH:3]=1.F[P-](F)(F)(F)(F)F.[N:41]1(O[P+](N2CCCC2)(N2CCCC2)N2CCCC2)C2C=CC=CC=2N=N1.N1(O)C2C=CC=CC=2N=N1.[Cl-].[NH4+].C(N(C(C)C)C(C)C)C>CN(C)C=O.C(OCC)(=O)C>[CH3:1][C:2]1[C:7]([CH:8]([S:18]([C:21]2[CH:22]=[N:23][C:24]([C:27]([F:29])([F:30])[F:28])=[CH:25][CH:26]=2)(=[O:20])=[O:19])[C:9]2[C:14]([F:15])=[CH:13][CH:12]=[C:11]([F:16])[C:10]=2[F:17])=[CH:6][N:5]=[C:4]([C:31]([NH2:41])=[O:33])[CH:3]=1

Participants

8

Reactant 5

HCID 25517Ammonium ChlorideHCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 2724699PyBOPHCID 57736425HCID 57736425, compound

Product 1

HCID 57736411HCID 57736411, compoundYield 58.5%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution 4-methyl-5-[[[6-(trifluoromethyl)pyridin-3-yl]sulfonyl](2,3,6-trifluorophenyl)methyl]pyridine-2-carboxylic acid (392 mg, 0.800 mmol) in N,N-dimethylformamide (10 ml), (benzotriazol-1-yloxy)tripyrrolidinophosphonium hexafluorophosphate (624 mg, 1.20 mmol), benzotriazol-1-ol (162 mg, 1.20 mmol), ammonium chloride (85.6 mg, 1.60 mmol), and N-ethyldiisopropylamine (0.557 ml, 3.20 mmol) were added in a nitrogen atmosphere at room temperature. After stirring for 2 hours at the same temperature, the reaction mixture was dissolved in ethyl acetate, and the solution was washed with 1 N hydrochloric acid, 1 N aqueous sodium hydroxide, saturated aqueous ammonium chloride, and then saturated brine. The organic layer was dried over anhydrous sodium sulfate and filtered, then the filtrate was concentrated under reduced pressure, and the obtained residue was subjected to flash silica gel chromatography. The fraction obtained from an elution with hexane:ethyl acetate=1:1 was concentrated under reduced pressure, and the resulting residue was washed with a mixed solvent of ethanol and diethyl ether, and then was collected by filtration, to obtain the title compound (229 mg, 0.468 mmol, 58%) as a white solid. The filtrate was concentrated under reduced pressure, and the resulting residue was washed with a mixed solvent of ethanol and diethyl ether, and then was collected by filtration, to obtain the title compound (66 mg, 0.135 mmol, 17%) as a white solid.

Workup

  1. washthe solution was washed with 1 N hydrochloric acid, 1 N aqueous sodium hydroxide, saturated aqueous ammonium chloride
  2. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  3. filtrationfiltered
  4. concentrationthe filtrate was concentrated under reduced pressure
  5. customThe fraction obtained from an elution with hexane
  6. concentrationethyl acetate=1:1 was concentrated under reduced pressure
  7. washthe resulting residue was washed with a mixed solvent of ethanol and diethyl ether
  8. filtrationwas collected by filtration

Sources & evidence

ORD record
ord-15e507b18bdd417fa46707e654de4761
Source dataset
uspto-grants-2012_02
Patent number
US08114886B2

Reaction notes

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