Benzene → (6-Benzenesulfonyl-1-hydroxy-1,2,3,4-tetrahydro-naphthalen-1-yl)-acetic acid methyl ester

HRID 2242607Notes

Reaction equation

HRID 2242607 reaction equation
C1C=CC=CC=1.II.[C:9]1([S:15]([C:18]2[CH:19]=[C:20]3[C:25](=[CH:26][CH:27]=2)[C:24](=[O:28])[CH2:23][CH2:22][CH2:21]3)(=[O:17])=[O:16])[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=1.Br[CH:30](C)[C:31]([O:33][CH2:34]C)=[O:32]>O.[Zn]>[CH3:34][O:33][C:31](=[O:32])[CH2:30][C:24]1([OH:28])[C:25]2[C:20](=[CH:19][C:18]([S:15]([C:9]3[CH:10]=[CH:11][CH:12]=[CH:13][CH:14]=3)(=[O:17])=[O:16])=[CH:27][CH:26]=2)[CH2:21][CH2:22][CH2:23]1

Participants

7

Reactant 4

HCID 241BenzeneHCID 807IodineHCID 79040Ethyl 2-bromopropionateHCID 590217396-benzenesulfonyl-3,4-dihydro-2H-naphthalen-1-one

Product 1

HCID 66651224(6-Benzenesulfonyl-1-hydroxy-1,2,3,4-tetrahydro-naphthalen-1-yl)-acetic acid methyl ester

Reagents, catalysts & solvents 2

HCID 23994ZincCatalystHCID 962WaterSolvent

Procedure

A solution/suspension of anhydrous benzene (25 mL), powdered Zinc metal (0.505 g, 7.72 mmol), I2 (0.01 g) and 6-benzenesulfonyl-3,4-dihydro-2H-naphthalen-1-one was stirred for 10 minutes at room temperature. Ethyl bromopropionate (0.784 mL, 1.18 g, 7.07 mmol) was added and the reaction mixture was heated to reflux for 2.5 hours. The reaction mixture was allowed to cool, diluted with 300 mL of water and extracted twice with 250 mL of EtOAc. The combined organic layers were washed with water and saturated brine, dried (MgSO4) and evaporated under reduced pressure to yield (6-benzenesulfonyl-1-hydroxy-1,2,3,4-tetrahydro-naphthalen-1-yl)-acetic acid methyl ester. MS: 375 (M+H)+.

Workup

  1. temperaturethe reaction mixture was heated
  2. temperatureto reflux for 2.5 hours
  3. temperatureto cool
  4. extractionextracted twice with 250 mL of EtOAc
  5. washThe combined organic layers were washed with water and saturated brine
  6. dry with materialdried (MgSO4)
  7. customevaporated under reduced pressure

Sources & evidence

ORD record
ord-3cf8226b9e52493b9e1399a94560583e
Source dataset
uspto-grants-2010_03
Patent number
US07671235B2

Reaction notes

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