Pyridine → HCID 68547866, compound

HRID 2388566Notes

Reaction equation

HRID 2388566 reaction equation
[Cl:1][C:2]1[C:9]([CH3:10])=[C:8]([NH:11][C@@H:12]([C:16]2[O:17][C:18]([C:21]3[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=3)=[N:19][N:20]=2)[C@@H:13]([OH:15])[CH3:14])[CH:7]=[CH:6][C:3]=1[C:4]#[N:5].N1C=CC=CC=1.[C:33](Cl)(=[O:36])[CH2:34][CH3:35]>C(Cl)Cl>[C:33]([O:15][C@@H:13]([CH3:14])[C@@H:12]([NH:11][C:8]1[CH:7]=[CH:6][C:3]([C:4]#[N:5])=[C:2]([Cl:1])[C:9]=1[CH3:10])[C:16]1[O:17][C:18]([C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)=[N:19][N:20]=1)(=[O:36])[CH2:34][CH3:35]

Participants

5

Reactant 3

HCID 1049PyridineHCID 62324Propionyl chlorideHCID 442006592-chloro-4-((1R,2S)-2-hydroxy-1-(5-phenyl-1,3,4-oxadiazol-2-yl)propylamino)-3-methylbenzonitrile

Product 1

HCID 68547866HCID 68547866, compoundYield 98%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a 50 mL round bottomed flask was added 2-chloro-4-((1R,2S)-2-hydroxy-1-(5-phenyl-1,3,4-oxadiazol-2-yl)propylamino)-3-methylbenzonitrile (300 mg, 0.82 mmol, pyridine (1 mL, 12.41 mmol) and methylene chloride (15 mL). Propionyl chloride (0.358 mL, 4.1 mmol) was then added dropwise and the mixture was stirred at room temperature for 48 h. The reaction mixture was then quenched with 10% aq HCl (15 mL) and methylene chloride (30 mL) was added. The phases were partitioned and the aqueous phase extracted with methylene chloride (30 mL) (×2). The combined organics were washed with a saturated solution of sodium hydrogen carbonate, dried (Na2SO4) and concentrated to furnish a yellow oil (0.382 g, 98%). 1H NMR (Acetone d6, 400 MHz) δ 8.01 (d, J=8 Hz, 2H), 7.64-7.53 (m, 4H), 7.02 (d, J=9 Hz, 1H), 5.73 (d, J=9 Hz, 1H), 5.69-5.62 (m, 1H), 5.44 (dd, J=5 and 8 Hz, 1H), 2.37 (s, 3H), 2.35 (q, J=7 Hz, 1H), 2.34 (q, J=7 Hz, 1H), 1.46 (d, J=6 Hz, 3H) and 1.03 (t, J=8 Hz, 3H).

Workup

  1. customThe reaction mixture was then quenched with 10% aq HCl (15 mL) and methylene chloride (30 mL)
  2. additionwas added
  3. customThe phases were partitioned
  4. extractionthe aqueous phase extracted with methylene chloride (30 mL) (×2)
  5. washThe combined organics were washed with a saturated solution of sodium hydrogen carbonate
  6. dry with materialdried (Na2SO4)
  7. concentrationconcentrated

Sources & evidence

ORD record
ord-27181328d7ef45fab885636e3692004a
Source dataset
uspto-grants-2012_09
Patent number
US08268872B2

Reaction notes

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