Water → 2-[2-Methyl-3-(4-trifluoromethyl-phenyl)-benzo[b]thiophen-6-yloxy]-ethylamine

HRID 966376Notes

Reaction equation

HRID 966376 reaction equation
[N:1]([CH2:4][CH2:5][O:6][C:7]1[CH:8]=[CH:9][C:10]2[C:14]([C:15]3[CH:20]=[CH:19][C:18]([C:21]([F:24])([F:23])[F:22])=[CH:17][CH:16]=3)=[C:13]([CH3:25])[S:12][C:11]=2[CH:26]=1)=[N+]=[N-].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.O>O1CCCC1>[CH3:25][C:13]1[S:12][C:11]2[CH:26]=[C:7]([O:6][CH2:5][CH2:4][NH2:1])[CH:8]=[CH:9][C:10]=2[C:14]=1[C:15]1[CH:20]=[CH:19][C:18]([C:21]([F:24])([F:22])[F:23])=[CH:17][CH:16]=1

Participants

5

Reactant 3

HCID 962WaterHCID 11776TriphenylphosphineHCID 223140916-(2-Azido-ethoxy)-2-methyl-3-(4-trifluoromethyl-phenyl)-benzo[b]thiophene

Product 1

HCID 223140602-[2-Methyl-3-(4-trifluoromethyl-phenyl)-benzo[b]thiophen-6-yloxy]-ethylamineYield 93.4%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

0.230 g (0.610 mmol) 6-(2-Azido-ethoxy)-2-methyl-3-(4-trifluoromethyl-phenyl)-benzo[b]thiophene and 0.484 g (1.83 mmol) of triphenylphosphin were dissolved in 1.6 ml of tetrahydrofuran. After stirring of the reaction mixture for 15 minutes at room temperature, 0.1 ml of water were added and the reaction mixture heated to 60° C. for 16 hours. It was then evaporated under reduced pressure, poured into 50 ml of water and extracted 3 times with 10 ml of dichloromethane. The combined dichloromethane phases were washed with brine, dried over magnesium sulfate and evaporated under reduced pressure. The residue formed was chromatographed on silica gel with a 9:1 v/v mixture of dichloromethane and methanol as the eluent giving 0.200 g (93.4%) 2-[2-Methyl-3-(4-trifluoromethyl-phenyl)-benzo[b]thiophen-6-yloxy]-ethylamine as colorless oil, MS: 352 (MH+).

Workup

  1. temperaturethe reaction mixture heated to 60° C. for 16 hours
  2. customIt was then evaporated under reduced pressure
  3. additionpoured into 50 ml of water
  4. extractionextracted 3 times with 10 ml of dichloromethane
  5. washThe combined dichloromethane phases were washed with brine
  6. dry with materialdried over magnesium sulfate
  7. customevaporated under reduced pressure
  8. customThe residue formed
  9. customwas chromatographed on silica gel with a 9:1 v/v mixture of dichloromethane and methanol as the eluent

Sources & evidence

ORD record
ord-11b28500f6ae45f9b3a09696f27f9abd
Source dataset
uspto-grants-2005_10
Patent number
US06951879B2

Reaction notes

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