Sodium Carbonate → 8-Methoxy-N-propyl-N-[3-(2,3-dihydro-1,1-dioxo-3-oxo-1,2-benzisothiazolyl)propyl]-2-aminotetralin

HRID 1078069Notes

Reaction equation

HRID 1078069 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[CH:5][CH:6]=[C:7]2[C:12]=1[CH2:11][CH:10]([NH:13][CH2:14][CH2:15][CH3:16])[CH2:9][CH2:8]2.I[CH2:18][CH2:19][CH2:20][N:21]1[C:25](=[O:26])[C:24]2[CH:27]=[CH:28][CH:29]=[CH:30][C:23]=2[S:22]1(=[O:32])=[O:31].C(=O)([O-])[O-].[Na+].[Na+]>C(#N)C>[CH3:1][O:2][C:3]1[CH:4]=[CH:5][CH:6]=[C:7]2[C:12]=1[CH2:11][CH:10]([N:13]([CH2:14][CH2:15][CH3:16])[CH2:18][CH2:19][CH2:20][N:21]1[C:25](=[O:26])[C:24]3[CH:27]=[CH:28][CH:29]=[CH:30][C:23]=3[S:22]1(=[O:32])=[O:31])[CH2:9][CH2:8]2

Participants

5

Reactant 3

HCID 10340Sodium CarbonateHCID 127414178-methoxy-N-propyl-1,2,3,4-tetrahydronaphthalen-2-amineHCID 18331848N-(3-iodopropyl)-2,3-dihydro-1,1-dioxo-3-benzisothiazolone

Product 1

HCID 183318118-Methoxy-N-propyl-N-[3-(2,3-dihydro-1,1-dioxo-3-oxo-1,2-benzisothiazolyl)propyl]-2-aminotetralin

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

8-Methoxy-N-propyl-2-aminotetralin (Arvidsson L.-E. et al., J. Med. Chem., 27, 45 (1984) (2 g, 10 mmol), N-(3-iodopropyl)-2,3-dihydro-1,1-dioxo-3-benzisothiazolone (7.5 g), sodium carbonate (2.5 g), and acetonitrile (25 ml) were heated to reflux for 24 hours. After cooling, the solvent was removed in vacuo and the residue placed on a flash silica gel column (3 cm×35 cm) and eluted with ethyl acetate/hexane (5:95, 10:90, 15:85, 20:80, successively). Solvent removal in vacuo afforded the title compound as a white powder (m.p. 131° C.).

Workup

  1. temperatureto reflux for 24 hours
  2. temperatureAfter cooling
  3. customthe solvent was removed in vacuo
  4. washeluted with ethyl acetate/hexane (5:95, 10:90, 15:85, 20:80
  5. customSolvent removal in vacuo

Sources & evidence

ORD record
ord-57772f22d2d54935b9d4a61f4d585b57
Source dataset
uspto-grants-1996_08
Patent number
US05545755

Reaction notes

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