Sodium Carbonate → 1,1-dimethylethyl [4-(3,4-dihydro[1]benzothieno[3,2-c]pyridine-2(1H)-yl)butyl]carbamate

HRID 2230792Notes

Reaction equation

HRID 2230792 reaction equation
Cl.[CH2:2]1[C:7]2[C:8]3[CH:14]=[CH:13][CH:12]=[CH:11][C:9]=3[S:10][C:6]=2[CH2:5][CH2:4][NH:3]1.Cl[CH2:16][CH2:17][CH2:18][CH2:19][NH:20][C:21](=[O:27])[O:22][C:23]([CH3:26])([CH3:25])[CH3:24].C([O-])([O-])=O.[Na+].[Na+]>CC(C)CC(=O)C>[CH2:2]1[C:7]2[C:8]3[CH:14]=[CH:13][CH:12]=[CH:11][C:9]=3[S:10][C:6]=2[CH2:5][CH2:4][N:3]1[CH2:16][CH2:17][CH2:18][CH2:19][NH:20][C:21](=[O:27])[O:22][C:23]([CH3:26])([CH3:25])[CH3:24]

Participants

5

Reactant 3

HCID 10340Sodium CarbonateHCID 19758183tert-Butyl (4-chlorobutyl)carbamateHCID 694849091,2,3,4-tetrahydro[1]benzothieno[3,2-c]pyridine HCl

Product 1

HCID 865863891,1-dimethylethyl [4-(3,4-dihydro[1]benzothieno[3,2-c]pyridine-2(1H)-yl)butyl]carbamate

Reagents, catalysts & solvents 1

HCID 7909Methyl Isobutyl KetoneSolvent

Procedure

A mixture of 1,2,3,4-tetrahydro[1]benzothieno[3,2-c]pyridine HCl (1:1) (0.02 mol), 1,1-dimethylethyl (4-chlorobutyl)carbamate (0.044 mol), Na2CO3 (0.05 mol) and KI (catalytic quantity) in 4-methyl-2-pentanone (200 ml) was stirred and refluxed overnight, then cooled to room temperature and the solvent was evaporated. The residue was washed with water and extracted with CH2Cl2. The separated organic layer was dried, filtered and the solvent evaporated. The residue was purified by column chromatography over silica gel (eluent: CH2Cl2/CH3OH 90/10). The desired fractions were collected and the solvent was evaporated, yielding 1,1-dimethylethyl [4-(3,4-dihydro[1]benzothieno[3,2-c]pyridine-2(1H)-yl)butyl]carbamate (intern 1).

Workup

  1. temperaturerefluxed overnight
  2. customthe solvent was evaporated
  3. washThe residue was washed with water
  4. extractionextracted with CH2Cl2
  5. customThe separated organic layer was dried
  6. filtrationfiltered
  7. customthe solvent evaporated
  8. customThe residue was purified by column chromatography over silica gel (eluent: CH2Cl2/CH3OH 90/10)
  9. customThe desired fractions were collected
  10. customthe solvent was evaporated

Sources & evidence

ORD record
ord-8f3381e5a9c74c85912309bfafc95662
Source dataset
uspto-grants-2002_07
Patent number
US06426350B1

Reaction notes

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