Diisopropylethylamine → 2-phenyl-5-trifluoromethyl-oxazole-4-carboxylic acid [4-(3-trifluoromethyl-phenyl)-3,4,5,6-tetrahydro-2H-[1,2']bipyridinyl-5'-y]amide

HRID 1510284Notes

Reaction equation

HRID 1510284 reaction equation
[F:1][C:2]([F:23])([F:22])[C:3]1[CH:4]=[C:5]([CH:9]2[CH2:14][CH2:13][N:12]([C:15]3[CH:20]=[CH:19][C:18]([NH2:21])=[CH:17][N:16]=3)[CH2:11][CH2:10]2)[CH:6]=[CH:7][CH:8]=1.C(N(C(C)C)CC)(C)C.[C:33]1([C:39]2[O:40][C:41]([C:47]([F:50])([F:49])[F:48])=[C:42]([C:44](Cl)=[O:45])[N:43]=2)[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=1>C(Cl)Cl.C(OCC)(=O)C>[F:23][C:2]([F:1])([F:22])[C:3]1[CH:4]=[C:5]([CH:9]2[CH2:10][CH2:11][N:12]([C:15]3[CH:20]=[CH:19][C:18]([NH:21][C:44]([C:42]4[N:43]=[C:39]([C:33]5[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=5)[O:40][C:41]=4[C:47]([F:49])([F:50])[F:48])=[O:45])=[CH:17][N:16]=3)[CH2:13][CH2:14]2)[CH:6]=[CH:7][CH:8]=1

Participants

6

Reactant 3

HCID 81531DiisopropylethylamineHCID 593712454-(3-trifluoromethyl-phenyl)-3,4,5,6-tetrahydro-2H-[1,2']bipyridinyl-5'-ylamineHCID 860328062-Phenyl-5-trifluoromethyl-oxazole-4-carbonyl chloride

Product 1

HCID 468329082-phenyl-5-trifluoromethyl-oxazole-4-carboxylic acid [4-(3-trifluoromethyl-phenyl)-3,4,5,6-tetrahydro-2H-[1,2']bipyridinyl-5'-y]amide

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 4-(3-trifluoromethyl-phenyl)-3,4,5,6-tetrahydro-2H-[1,2′]bipyridinyl-5′-ylamine (400 mg, 1.24 mmol) in methylene chloride (10 mL) was added diisopropylethylamine (0.60 mL, 3.30 mmol) followed by 2-phenyl-5-trifluoromethyl-oxazole-4-carbonyl chloride (300 mg, 1.10 mmol). The reaction was stirred at room temperature for 24 hours and then diluted with ethyl acetate. The organic layer was washed with saturated sodium bicarbonate, dried over magnesium sulfate, filtered and evaporated to dryness under vacuum. The residue was purified by HPLC to yield 2-phenyl-5-trifluoromethyl-oxazole-4-carboxylic acid [4-(3-trifluoromethyl-phenyl)-3,4,5,6-tetrahydro-2H-[1,2′]bipyridinyl-5′-yl]-amide as a light purple solid. The NMR spectrum obtained on the sample is compatible with its structure. LCMS calcd for C28H22F6N4O2 (m/e) 560, obsd 561 (M+H).

Workup

  1. washThe organic layer was washed with saturated sodium bicarbonate
  2. dry with materialdried over magnesium sulfate
  3. filtrationfiltered
  4. customevaporated to dryness under vacuum
  5. customThe residue was purified by HPLC

Sources & evidence

ORD record
ord-e374248d74d34817937aa9820e688584
Source dataset
uspto-grants-2012_07
Patent number
US08211914B2

Reaction notes

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