Diiodomethane → HCID 57786005, compound

HRID 1628825Notes

Reaction equation

HRID 1628825 reaction equation
[Cl:1][C:2]1[C:10]2[N:9]=[C:8]3[N:11]([C:15]4[C:16]([CH3:23])=[N:17][C:18]([O:21][CH3:22])=[CH:19][CH:20]=4)[CH2:12][CH2:13][CH2:14][N:7]3[C:6]=2[C:5]([CH:24]([O:27][CH:28]=[CH2:29])[CH2:25][CH3:26])=[CH:4][CH:3]=1.[CH2:30]([Zn]CC)C.ICI>ClCCl>[Cl:1][C:2]1[C:10]2[N:9]=[C:8]3[N:11]([C:15]4[C:16]([CH3:23])=[N:17][C:18]([O:21][CH3:22])=[CH:19][CH:20]=4)[CH2:12][CH2:13][CH2:14][N:7]3[C:6]=2[C:5]([CH:24]([O:27][CH:28]2[CH2:30][CH2:29]2)[CH2:25][CH3:26])=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 6346DiiodomethaneHCID 57786147HCID 57786147, compoundHCID 178418750HCID 178418750, compound

Product 1

HCID 57786005HCID 57786005, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

To a solution of 9-chloro-6-[1-(ethenyloxy)propyl]-1-(6-methoxy-2-methylpyridin-3-yl)-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole (65.0 mg, 0.157 mmol) in dichloromethane (1.5 mL) were added diethyl zinc (1.0 M solution in n-hexane, 0.787 mL, 0.787 mmol) and diiodomethane (0.13 mL, 1.57 mmol) at 0° C. The reaction mixture was stirred at 0° C. for 5 hrs. The mixture was quenched with aqueous saturated ammonium chloride and extracted with ethyl acetate (×3). The combined organic layer was washed with water (×2) and brine (×1), dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo, the residue was purified by silica gel column chromatography eluting with a 0-40% ethyl acetate/n-hexane gradient mixture to give the mixture contained title compound. To the solution of residue in ethyl acetate/MeOH (1.0 mL/0.5 mL) was added 4N hydrochloric acid/ethyl acetate (25 μL). The reaction mixture was stirred at room temperature for 3 hrs. After the mixture was concentrated. The residue was purified by silica gel column chromatography eluting with a 0-40% ethyl acetate/n-hexane gradient mixture to give the title compound as a colorless amorphous (7.0 mg, 0.0164 mmol, 10%).

Workup

  1. customThe mixture was quenched with aqueous saturated ammonium chloride
  2. extractionextracted with ethyl acetate (×3)
  3. washThe combined organic layer was washed with water (×2) and brine (×1)
  4. dry with materialdried over anhydrous magnesium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customthe residue was purified by silica gel column chromatography
  8. washeluting with a 0-40% ethyl acetate/n-hexane gradient mixture
  9. customto give the mixture

Sources & evidence

ORD record
ord-30646e87ce264b51b96ce9a04ac5cb82
Source dataset
uspto-grants-2014_07
Patent number
US08785460B2

Reaction notes

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