Diisopropylethylamine → 1,2,3,4-Tetrahydro-6,7-dimethoxy-2-[7-phenyl-7-(phenylthio)heptyl]isoquinoline

HRID 1684397Notes

Reaction equation

HRID 1684397 reaction equation
Cl.[CH3:2][O:3][C:4]1[CH:5]=[C:6]2[C:11](=[CH:12][C:13]=1[O:14][CH3:15])[CH2:10][NH:9][CH2:8][CH2:7]2.Br[CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH:23]([S:30][C:31]1[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=1)[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1.C(N(C(C)C)C(C)C)C>C(#N)C>[CH3:2][O:3][C:4]1[CH:5]=[C:6]2[C:11](=[CH:12][C:13]=1[O:14][CH3:15])[CH2:10][N:9]([CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH:23]([C:24]1[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=1)[S:30][C:31]1[CH:32]=[CH:33][CH:34]=[CH:35][CH:36]=1)[CH2:8][CH2:7]2

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 64560356,7-Dimethoxy-1,2,3,4-tetrahydroisoquinoline hydrochlorideHCID 10570687[(7-Bromo-1-phenylheptyl)thio]benzene

Product 1

HCID 106722321,2,3,4-Tetrahydro-6,7-dimethoxy-2-[7-phenyl-7-(phenylthio)heptyl]isoquinolineYield 36.4%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

The free base from 4.60 g of 6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline hydrochloride, 3.63 g of [(7-bromo-1-phenylheptyl)thio]benzene, 50 ml of acetonitrile and 2.61 ml of ethyl diisopropylamine is heated at reflux temperature for 29 hours. The solvent is evaporated over night and the residue is partitioned between chloroform and aqueous ammonium hydroxide. The organic layer is dried and concentrated in vacuo to give 5.81 g of crude product. The residue is purified by chromatography (silica gel: chloroform/methyl alcohol) to give 1.73 g of the desired product.

Workup

  1. temperatureat reflux temperature for 29 hours
  2. customThe solvent is evaporated over night
  3. customthe residue is partitioned between chloroform and aqueous ammonium hydroxide
  4. customThe organic layer is dried
  5. concentrationconcentrated in vacuo
  6. customto give 5.81 g of crude product
  7. customThe residue is purified by chromatography (silica gel: chloroform/methyl alcohol)

Sources & evidence

ORD record
ord-4d13419bcb504897ab37a09dec8bec12
Source dataset
uspto-grants-1997_06
Patent number
US05639887

Reaction notes

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