Triethylamine → HCID 57786105, compound

HRID 1628717Notes

Reaction equation

HRID 1628717 reaction equation
[Cl:1][C:2]1[C:10]2[N:9]=[C:8]3[N:11]([C:15]4[C:20]([CH3:21])=[CH:19][C:18]([Cl:22])=[CH:17][C:16]=4[Cl:23])[CH2:12][CH2:13][CH2:14][N:7]3[C:6]=2[C:5]([CH2:24][OH:25])=[CH:4][CH:3]=1.C(N(CC)CC)C>CS(C)=O.C(=O)([O-])O.[Na+]>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([CH:24]=[O:25])=[C:6]2[C:10]=1[N:9]=[C:8]1[N:11]([C:15]3[C:20]([CH3:21])=[CH:19][C:18]([Cl:22])=[CH:17][C:16]=3[Cl:23])[CH2:12][CH2:13][CH2:14][N:7]21

Participants

5

Reactant 2

HCID 8471TriethylamineHCID 57785980HCID 57785980, compound

Product 1

HCID 57786105HCID 57786105, compoundYield 30.5%

Reagents, catalysts & solvents 2

HCID 679Dimethyl SulfoxideSolventHCID 516892Sodium BicarbonateSolvent

Procedure

Sulfur trioxide-pyridine complex (1.71 g, 10.7 mmol) was added to a stirred solution of [9-chloro-1-(2,4-dichloro-6-methylphenyl)-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazol-6-yl]methanol (610 mg, 1.54 mmol), triethylamine (1.72 mL) in dimethyl sulfoxide (20 mL) at room temperature, and the mixture was stirred at room temperature for 7 hr. The mixture was diluted with saturated aqueous sodium hydrogen carbonate, and extracted with ethyl acetate. The combined organic layer was washed with brine, dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo. The residue was purified by flash column chromatography on silica gel eluting with a 10-50% ethyl acetate/n-hexane gradient mixture. The filtrate was concentrated in vacuo to give the title compound as a colorless solid (185 mg, 0.469 mmol, 30%).

Workup

  1. extractionextracted with ethyl acetate
  2. washThe combined organic layer was washed with brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customThe residue was purified by flash column chromatography on silica gel eluting with a 10-50% ethyl acetate/n-hexane gradient mixture
  7. concentrationThe filtrate was concentrated in vacuo

Sources & evidence

ORD record
ord-3ebac892394f429d87d1a91df7d9640c
Source dataset
uspto-grants-2014_07
Patent number
US08785460B2

Reaction notes

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