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4-Iodopyridine → HCID 86680495, compound

HRID 2205548
Notes
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Reaction equation

HRID 2205548 reaction equation
I[C:2]1[CH:7]=[CH:6][N:5]=[CH:4][CH:3]=1.[Li]CCCC.[F:13][C:14]1[CH:19]=[CH:18][C:17]([C:20]2[CH:24]=[C:23]([C:25](=O)[CH3:26])[O:22][N:21]=2)=[CH:16][CH:15]=1>C1COCC1>[F:13][C:14]1[CH:15]=[CH:16][C:17]([C:20]2[CH:24]=[C:23]([CH:25]([C:2]3[CH:7]=[CH:6][N:5]=[CH:4][CH:3]=3)[CH3:26])[O:22][N:21]=2)=[CH:18][CH:19]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 6094924-IodopyridineHCID 228319891-(3-(4-Fluorophenyl)isoxazol-5-yl)ethanoneHCID 178418339Butyllithium

Product 1

HCID 86680495HCID 86680495, compoundYield 30.8%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

To a stirred solution of 4-iodopyridine (0.3 g, 1.463 mmol) in THF (10 mL) was added n-BuLi (0.6 mL, 0.96 mmol) at −78° C. and stirred for 10 min. A solution of 1-(3-(4-fluorophenyl)isoxazol-5-yl)ethanone (0.1 g, 0.484 mmol) in THF (5 mL) was added to the reaction and the mixture stirred at −78° C. for 2 h. The reaction was quenched with saturated ammonium chloride solution (10 mL) and diluted with ethyl acetate (50 mL). The organic layer was separated, washed with saturated ammonium chloride (3×150 mL) followed by brine solution (2×20 mL). The organic layer was dried over sodium sulfate, filtered and concentrated under reduced pressure to obtain crude product. The crude product was purified by column chromatography (100-200μ silica gel; 50% ethyl acetate in hexane) to obtain 3-(4-fluorophenyl)-5-(1-(pyridin-4-yl)ethyl)isoxazole as off-white solid (0.04 g, 29% yield). 1H NMR (400 MHz, DMSO-d6): δ 8.55 (d, 2H), 7.91 (dd, 2H), 7.46 (d, 2H), 7.32 (t, 2H), 6.81 (s, 1H), 7.04 (s, 1H), 1.86 (s, 3H); LC-MS m/z calculated for [M+H]+285.10. found 285.1.

Workup

  1. stirringthe mixture stirred at −78° C. for 2 h
  2. customThe reaction was quenched with saturated ammonium chloride solution (10 mL)
  3. additiondiluted with ethyl acetate (50 mL)
  4. customThe organic layer was separated
  5. washwashed with saturated ammonium chloride (3×150 mL)
  6. dry with materialThe organic layer was dried over sodium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated under reduced pressure
  9. customto obtain crude product
  10. customThe crude product was purified by column chromatography (100-200μ silica gel; 50% ethyl acetate in hexane)

Sources & evidence

ORD record
ord-277cdc5759ab4ccdbde6fa9998971963
Source dataset
uspto-grants-2016_06
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09371316B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes