Ethyl bromoacetate → [5-(ethoxycarbonylmethoxy)-1,2,3,4-tetrahydro-2-naphthyl]methyl N,N-diphenylcarbamate

HRID 963695Notes

Reaction equation

HRID 963695 reaction equation
[C:1]1([N:7]([C:23]2[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=2)[C:8](=[O:22])[O:9][CH2:10][CH:11]2[CH2:20][CH2:19][C:18]3[C:13](=[CH:14][CH:15]=[CH:16][C:17]=3[OH:21])[CH2:12]2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.Br[CH2:30][C:31]([O:33][CH2:34][CH3:35])=[O:32].C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O>[C:23]1([N:7]([C:1]2[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=2)[C:8](=[O:22])[O:9][CH2:10][CH:11]2[CH2:20][CH2:19][C:18]3[C:13](=[CH:14][CH:15]=[CH:16][C:17]=3[O:21][CH2:30][C:31]([O:33][CH2:34][CH3:35])=[O:32])[CH2:12]2)[CH:24]=[CH:25][CH:26]=[CH:27][CH:28]=1

Participants

5

Reactant 3

HCID 7748Ethyl bromoacetateHCID 11430Potassium CarbonateHCID 54103601(1,2,3,4-tetrahydro-5-hydroxy-2-naphthyl)methyl N,N-diphenylcarbamate

Product 1

HCID 70187804[5-(ethoxycarbonylmethoxy)-1,2,3,4-tetrahydro-2-naphthyl]methyl N,N-diphenylcarbamateYield 74%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A suspension of (1,2,3,4-tetrahydro-5-hydroxy-2-naphthyl)methyl N,N-diphenylcarbamate (67 mg), ethyl bromoacetate (33 mg) and potassium carbonate (37 mg) in N,N-dimethylformamide (1.0 ml) was stirred at room temperature for 5.5 hours and then extracted with ethyl acetate. The extract was washed with water and brine (twice), dried over magnesium sulfate, and evaporated in vacuo. The residue was chromatographed (toluene-ethyl acetate) over silica gel to afford [5-(ethoxycarbonylmethoxy)-1,2,3,4-tetrahydro-2-naphthyl]methyl N,N-diphenylcarbamate (61 mg) as an oil.

Workup

  1. extractionextracted with ethyl acetate
  2. washThe extract was washed with water and brine (twice),
  3. dry with materialdried over magnesium sulfate
  4. customevaporated in vacuo
  5. customThe residue was chromatographed (toluene-ethyl acetate) over silica gel

Sources & evidence

ORD record
ord-6b11c2ac16f149b79c47f5439f603be3
Source dataset
uspto-grants-1998_06
Patent number
US05763489

Reaction notes

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