Tetrahydrofuran → 4-Pyridin-4-yl-3-{3-[3-(4-trifluoromethyl-phenyl)-ureido]-phenyl}-pyrazole-1-carboxylic acid ethyl ester

HRID 45821

Reaction equation

HRID 45821 reaction equation
[N:1]1[CH:6]=[CH:5][C:4]([C:7]2[C:8]([C:12]3[CH:13]=[C:14]([NH:18][C:19]([NH:21][C:22]4[CH:27]=[CH:26][C:25]([C:28]([F:31])([F:30])[F:29])=[CH:24][CH:23]=4)=[O:20])[CH:15]=[CH:16][CH:17]=3)=[N:9][NH:10][CH:11]=2)=[CH:3][CH:2]=1.C1COCC1.Cl[C:38]([O:40][CH2:41][CH3:42])=[O:39]>>[CH2:41]([O:40][C:38]([N:10]1[CH:11]=[C:7]([C:4]2[CH:5]=[CH:6][N:1]=[CH:2][CH:3]=2)[C:8]([C:12]2[CH:17]=[CH:16][CH:15]=[C:14]([NH:18][C:19]([NH:21][C:22]3[CH:27]=[CH:26][C:25]([C:28]([F:31])([F:30])[F:29])=[CH:24][CH:23]=3)=[O:20])[CH:13]=2)=[N:9]1)=[O:39])[CH3:42]

Participants

4

Reactant 3

HCID 8028TetrahydrofuranHCID 10928Ethyl chloroformateHCID 178522056HCID 178522056, compound

Product 1

HCID 446220684-Pyridin-4-yl-3-{3-[3-(4-trifluoromethyl-phenyl)-ureido]-phenyl}-pyrazole-1-carboxylic acid ethyl esterYield 77%

Procedure

To a suspension of 1-[3-(4-pyridin-4-yl-1H-pyrazol-3-yl)-phenyl]-3-(4-trifluoromethyl-phenyl)-urea (100 mg, 0.236 mmol) (prepared as described in Example 6) in THF (10 mL) DIPEA (61 mg, 81 uL, 0.427 mmol) was added. The mixture was stirred for 5 minutes before adding ethyl chloroformate (31 mg, 27 uL, 0.283 mmol). After 2 hours the mixture was evaporated to dryness, taken up with ethyl acetate and washed three times with water. The organic phase was dried over Na2SO4, evaporated to dryness and triturated with diisopropyl ether to yield 4-pyridin-4-yl-3-{3-[3-(4-trifluoromethyl-phenyl)-ureido]-phenyl}-pyrazole-1-carboxylic acid ethyl ester (90 mg, 77%).

Workup

  1. additionwas added
  2. customAfter 2 hours the mixture was evaporated to dryness
  3. washwashed three times with water
  4. dry with materialThe organic phase was dried over Na2SO4
  5. customevaporated to dryness
  6. customtriturated with diisopropyl ether

Sources & evidence

ORD record
ord-8f68ced5abb14c0ab1ce4add35ef2e63
Source dataset
uspto-grants-2013_09
Patent number
US08541575B2

Linked notes

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