Ammonium Chloride → HCID 86668505, compound

HRID 2047238Notes

Reaction equation

HRID 2047238 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([F:8])[C:3]=1[C:9]1[C:13]([C:14](O)=[O:15])=[C:12]([C:17]2[CH:18]=[N:19][N:20]([C:26]3[CH:31]=[CH:30][CH:29]=[C:28]([Cl:32])[CH:27]=3)[C:21]=2[C:22]([F:25])([F:24])[F:23])[O:11][N:10]=1.[Cl-].[NH4+].CC([N:38](C)C)=O.CCN(C(C)C)C(C)C>C(OC(=O)C)C>[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([F:8])[C:3]=1[C:9]1[C:13]([C:14]([NH2:38])=[O:15])=[C:12]([C:17]2[CH:18]=[N:19][N:20]([C:26]3[CH:31]=[CH:30][CH:29]=[C:28]([Cl:32])[CH:27]=3)[C:21]=2[C:22]([F:23])([F:25])[F:24])[O:11][N:10]=1

Participants

6

Reactant 4

HCID 25517Ammonium ChlorideHCID 31374DimethylacetamideHCID 81531DiisopropylethylamineHCID 86668506HCID 86668506, compound

Product 1

HCID 86668505HCID 86668505, compoundYield 90%

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Procedure

Saponification of the ester of example 11 was achieved following the description for example 19, first step, to give 3-(2-chloro-6-fluorophenyl)-5-(1-(3-chlorophenyl)-5-(trifluoromethyl)-1H-pyrazol-4-yl)isoxazole-4-carboxylic acid in 89% yield. To a solution of 6.0 g (12.34 mmol) 3-(2-chloro-6-fluorophenyl)-5-(1-(3-chlorophenyl)-5-(trifluoromethyl)-1H-pyrazol-4-yl)isoxazole-4-carboxylic acid and 1.98 g (37.021 mmol) ammoniumchlorid in 20 mL dry DMA 9.36 g (24.681 mmol) HBTU and 6.45 mL (37.021 mmol) DIPEA were added. The mixture was stirred 3 hours at r.t. Ethylacetate was added to the reaction mixture and it was washed twice with sodium hydrogen carbonate (5%, aq) and citric acid (5%, aq). The organic layer was dried over anhydrous magnesium sulfate and the solvent was removed in the vacuum. The oily residue became solid by drying in the vacuum. The solid was washed with petroleum ether, filtrated and dried in the vacuum to yield 5.37 g (90%) of example 121. Result of LC/MS MH+: 484.83; 1H NMR (DMSO-d6; CCl4): 7.39-7.78 (7H, m, CH-arom./2H NH2), 8.43 (1H, s, CH-pyraz.)

Workup

  1. washwas washed twice with sodium hydrogen carbonate (5%, aq) and citric acid (5%, aq)
  2. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
  3. customthe solvent was removed in the vacuum
  4. customby drying in the vacuum
  5. washThe solid was washed with petroleum ether
  6. filtrationfiltrated
  7. customdried in the vacuum

Sources & evidence

ORD record
ord-5412aa5d067a456abd62af1197540bc0
Source dataset
uspto-grants-2013_11
Patent number
US08592456B2

Reaction notes

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