Acetone → HCID 60139865, compound

HRID 270492Notes

Reaction equation

HRID 270492 reaction equation
[NH2:1][CH2:2][CH2:3][CH2:4][C:5]1([C:23]2[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=2)[N:9]([C:10](=[O:14])[CH:11]([CH3:13])[CH3:12])[N:8]=[C:7]([C:15]2[CH:20]=[C:19]([F:21])[CH:18]=[CH:17][C:16]=2[F:22])[O:6]1.[CH3:29][C:30]([CH3:32])=O.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>C(#N)C.C([O-])([O-])=O.[Na+].[Na+]>[F:22][C:16]1[CH:17]=[CH:18][C:19]([F:21])=[CH:20][C:15]=1[C:7]1[O:6][C:5]([CH2:4][CH2:3][CH2:2][NH:1][CH:30]([CH3:32])[CH3:29])([C:23]2[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=2)[N:9]([C:10](=[O:14])[CH:11]([CH3:13])[CH3:12])[N:8]=1

Participants

6

Reactant 3

HCID 180AcetoneHCID 5049666Sodium triacetoxyborohydride2×HCID 11668184HCID 11668184, compound

Product 1

HCID 60139865HCID 60139865, compoundYield 25%

Reagents, catalysts & solvents 2

HCID 6342AcetonitrileSolventHCID 10340Sodium CarbonateSolvent

Procedure

To a solution of 1-[2-(3-aminopropyl)-5-(2,5-difluorophenyl)-2-phenyl-[1,3,4]oxadiazol-3-yl]-2-methylpropan-1-one (12 mg, 0.031 mmol) in acetonitrile (0.5 mL) was added acetone (60 μL, 0.082 mmol) and sodium triacetoxyborohydride (10 mg, 0.045 mmol). After stirring at room temperature for 45 minutes, more sodium triacetoxyborohydride (10 mg, 0.045 mmol) was added. The mixture stirred at room temperature for 5 hours. The reaction mixture was diluted with 10% Na2CO3 (30 mL) and extracted with ethyl acetate (3×30 mL). The combined organics were washed with brine (45 mL), dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by flash column chromatography (40% to 100% ethyl acetate in hexanes with 2% triethylamine) to provide the final product (3.3 mg, 25%). MS ESI (+) m/z 430 (M+1) detected; 1H NMR (400 MHz, CDCl3) δ 7.56 (m, 2H), 7.50 (m, 1H), 7.36 (m, 3H), 7.15 (m, 2H), 3.36 (m, 1H), 3.01 (m, 1H), 2.78 (m, 1H), 2.67 (m, 2H), 2.53 (m, 1H), 1.66 (m, 2H), 1.20 (d, 3H, J=7 Hz), 1.14 (d, 3H, J=6 Hz), 1.04 (d, 6H, J=6 Hz).

Workup

  1. stirringThe mixture stirred at room temperature for 5 hours
  2. extractionextracted with ethyl acetate (3×30 mL)
  3. washThe combined organics were washed with brine (45 mL)
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by flash column chromatography (40% to 100% ethyl acetate in hexanes with 2% triethylamine)

Sources & evidence

ORD record
ord-7f4f7fb717c1435b8b589d1f7fff5b61
Source dataset
uspto-grants-2008_11
Patent number
US07449486B2

Reaction notes

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