Trifluoroacetic acid → 1-[4-(2-Bromethoxy)benzoyl]-2-(4-fluorophenyl)-6-(phenylmethoxy)-1,2,3,4-tetrahydroisoquinoline

HRID 2304694Notes

Reaction equation

HRID 2304694 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][CH2:9][CH2:10][C:11]2[CH:16]=[CH:15][CH:14]=[C:13]([O:17][CH2:18][C:19]3[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=3)[CH:12]=2)=[CH:4][CH:3]=1.[Br:25][CH2:26][CH2:27][O:28][C:29]1[CH:34]=[CH:33][C:32]([C:35]([CH:37]=O)=[O:36])=[CH:31][CH:30]=1.FC(F)(F)C(O)=O>>[Br:25][CH2:26][CH2:27][O:28][C:29]1[CH:34]=[CH:33][C:32]([C:35]([CH:37]2[C:16]3[C:11](=[CH:12][C:13]([O:17][CH2:18][C:19]4[CH:20]=[CH:21][CH:22]=[CH:23][CH:24]=4)=[CH:14][CH:15]=3)[CH2:10][CH2:9][N:8]2[C:5]2[CH:6]=[CH:7][C:2]([F:1])=[CH:3][CH:4]=2)=[O:36])=[CH:31][CH:30]=1

Participants

4

Reactant 3

HCID 6422Trifluoroacetic acidHCID 23440827HCID 23440827, compoundHCID 23440828(4-Fluorophenyl){2-[3-(phenylmethoxy)phenyl]ethyl}amine

Product 1

HCID 234408451-[4-(2-Bromethoxy)benzoyl]-2-(4-fluorophenyl)-6-(phenylmethoxy)-1,2,3,4-tetrahydroisoquinolineYield 78.4%

Procedure

To a solution of (4-fluorophenyl){2-[3-(phenylmethoxy)phenyl]ethyl}amine (0.643 g, 2.0 mmol) and [4-(2-bromoethoxy)phenyl]glyoxal (0.617 g, 2.4 mmol) was added trifluoroacetic acid (0.342 g, 3.0 mmol). The reaction stirred at room temperature for 4 hours. The reaction was quenched with saturated sodium bicarbonate and extracted with ethyl acetate. The organic layer was dried over MgSO4, filtered, concentrated, and purified by column chromatography (SiO2, 20% ethyl acetate/hexane) to provide the title compound (0.879 g, 78% yield): 1H NMR (CDCl3) 8.00 (d, 2H), 7.40 (m, 4H), 7.18 (m, 1H), 7.07 (d, 1H), 6.79-6.92 (m, 8H), 5.85 (s, 1H), 5.02 (s, 2H), 4.33 (t, 2H), 3.71(m, 1H), 3.64 (t, 2H), 3.47 (m, 1H), 3.07 (m, 1H), 2.87 (m, 1H); ES-MS (m/z) 560 [M+H]+.

Workup

  1. customThe reaction was quenched with saturated sodium bicarbonate
  2. extractionextracted with ethyl acetate
  3. dry with materialThe organic layer was dried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. custompurified by column chromatography (SiO2, 20% ethyl acetate/hexane)

Sources & evidence

ORD record
ord-c8271934dbfa4d12983ea318fdca004d
Source dataset
uspto-grants-2002_08
Patent number
US06436923B1

Reaction notes

Loading…