Triethylamine → HCID 68821879, compound

HRID 1986886Notes

Reaction equation

HRID 1986886 reaction equation
[CH3:1][O:2][C:3]1[C:4]([O:23][CH3:24])=[CH:5][C:6]2[CH2:7][CH:8]3[CH2:22][NH:21][CH2:20][CH2:19][N:9]3[CH:10]([C:13]3[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=3)[C:11]=2[CH:12]=1.C(N(CC)CC)C.[CH2:32]([O:39][CH2:40][C:41](Cl)=[O:42])[C:33]1[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=1>C(Cl)Cl>[CH3:1][O:2][C:3]1[C:4]([O:23][CH3:24])=[CH:5][C:6]2[CH2:7][CH:8]3[CH:22]([C:41](=[O:42])[CH2:40][O:39][CH2:32][C:33]4[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=4)[NH:21][CH2:20][CH2:19][N:9]3[CH:10]([C:13]3[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=3)[C:11]=2[CH:12]=1

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 177085Benzyloxyacetyl chlorideHCID 9883736HCID 9883736, compound

Product 1

HCID 68821879HCID 68821879, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

8,9-Dimethoxy-6-phenyl-1,3,4,6,11,11a-hexahydro-2H-pyrazino[1,2-b]isoquinoline (the compound obtained in Example 1-(6)) (1.6 g) is dissolved in methylene chloride (10 ml), and thereto are added triethylamine (0.8 ml) and benzyloxyacetyl chloride (0.8 ml) under ice-cooling, and the mixture is stirred for 30 minutes. The reaction solution is washed with a saturated aqueous sodium hydrogen carbonate solution, dried over magnesium sulfate, and concentrated under reduced pressure. The resulting residue is purified by column chromatography on silica gel (eluent; chloroform:ethyl acetate=9:1) to give 8,9-dimethoxy-2-benzyloxyacetyl-6-phenyl-1,3,4,6,11,11a-hexahydro-2H-pyrazino[1,2-b]isoquinoline (1.1 g).

Workup

  1. temperaturecooling
  2. washThe reaction solution is washed with a saturated aqueous sodium hydrogen carbonate solution
  3. dry with materialdried over magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe resulting residue is purified by column chromatography on silica gel (eluent; chloroform:ethyl acetate=9:1)

Sources & evidence

ORD record
ord-2a1923cb4b01418a91d85e2bd92c7007
Source dataset
uspto-grants-2009_06
Patent number
US07550476B2

Reaction notes

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