Cyclopropylamine → HCID 178527305, compound

HRID 2239995Notes

Reaction equation

HRID 2239995 reaction equation
[C:1]1([S:7]([C:10]2[C:18]3[C:13](=[CH:14][CH:15]=[C:16]([O:19][CH2:20][CH2:21]OS(C4C=CC(C)=CC=4)(=O)=O)[CH:17]=3)[NH:12][N:11]=2)(=[O:9])=[O:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[CH:33]1([NH2:36])[CH2:35][CH2:34]1>C1COCC1>[C:1]1([S:7]([C:10]2[C:18]3[C:13](=[CH:14][CH:15]=[C:16]([O:19][CH2:20][CH2:21][NH:36][CH:33]4[CH2:35][CH2:34]4)[CH:17]=3)[NH:12][N:11]=2)(=[O:8])=[O:9])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

Participants

4

Reactant 2

HCID 69828Cyclopropylamine2×HCID 178427774HCID 178427774, compound

Product 1

HCID 178527305HCID 178527305, compoundYield 50%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
80 °C

Procedure

A solution of toluene-4-sulfonic acid 2-(3-benzenesulfonyl-1H-indazol-5-yloxy)-ethyl ester (0.336 g, 0.711 mmol) and cyclopropylamine (1.0 mL, 14 mmol) in THF (8 mL) was stirred at 70° C. for 6 hours in a sealed tube. Additional cyclopropylamine (1.0 mL, 14 mmol) was added, and the reaction mixture was stirred for 6 hours at 80° C. in a sealed tube. After cooling somewhat, the reaction mixture was solvent evaporated and partitioned in ethyl acetate and aqueous sodium bicarbonate. The organic phase was then washed with water and brine, dried with anhydrous magnesium sulfate, filtered and concentrated. The residue was purified by flash chromatography using 5% methanol in chloroform. After drying in vacuo at 55° C. temperature for 25 minutes, [2-(3-benzenesulfonyl-1H-indazol-5-yloxy)-ethyl]-cyclopropyl-amine as a light yellow foam (0.127 g, 50.0%) was obtained. This was dissolved in chloroform, and ethereal hydrochloride was added. The mixture was concentrated and dried in vacuo at 75° C. for 16.5 hours to yield the hydrochloride as a buff solid (0.131 g): MP: 184-5° C. dec.; Mass Spectrum (+EI, [M+H]+) m/z 358.

Workup

  1. temperatureAfter cooling somewhat
  2. customevaporated
  3. custompartitioned in ethyl acetate
  4. washThe organic phase was then washed with water and brine
  5. dry with materialdried with anhydrous magnesium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customThe residue was purified by flash chromatography
  9. customAfter drying in vacuo at 55° C. temperature for 25 minutes

Sources & evidence

ORD record
ord-b700af3ccde745c797472dc11937d1f4
Source dataset
uspto-grants-2010_05
Patent number
US07723329B2

Reaction notes

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