Sodium Chloride → HCID 54118592, compound

HRID 359377Notes

Reaction equation

HRID 359377 reaction equation
[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[CH:3]=[C:2]1[CH:10]=O.[CH3:12][C:13]1([CH3:20])[C:17](=[O:18])[CH:16]=[C:15]([CH3:19])[O:14]1.[OH-].[Na+].[Cl-].[Na+]>C(O)C>[S:1]1[C:2]([CH:10]=[CH:19][C:15]2[O:14][C:13]([CH3:20])([CH3:12])[C:17](=[O:18])[CH:16]=2)=[CH:3][C:4]2[CH:9]=[CH:8][CH:7]=[CH:6][C:5]1=2

Participants

6

Reactant 4

HCID 5234Sodium ChlorideHCID 14798Sodium HydroxideHCID 1370803(2H)-Furanone, 2,2,5-trimethyl-HCID 7365001-Benzothiophene-2-carbaldehyde

Product 1

HCID 54118592HCID 54118592, compoundYield 88%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

To a solution of 2-benzothiophenecarboxaldehyde (1.5 g, 9.2 mM) and 2,2,5-trimethyl-3(2H)-furanone (1.6 g, 9.2 mm) in ethanol (100 mL), was added 1 N aqueous sodium hydroxide (1.2 mL, 1.2 mM). After the reaction solution was stirred at room temperature for one day, saturated aqueous sodium chloride (400 mL) was added. The aqueous layer was extracted with diethyl ether (3×100 mL). The combined ethereal extracts were washed with saturated aqueous sodium chloride (50 mL), dried over MgSO4, filtered and concentrated to give a brown solid. The residue was purified by chromatography (silica gel, hexane-ethyl acetate) to afford a yellow solid (2.2 g, 58% yield), m.p. 103.5°-104° C.

Workup

  1. extractionThe aqueous layer was extracted with diethyl ether (3×100 mL)
  2. washThe combined ethereal extracts were washed with saturated aqueous sodium chloride (50 mL)
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customto give a brown solid
  7. customThe residue was purified by chromatography (silica gel, hexane-ethyl acetate)

Sources & evidence

ORD record
ord-92fa76b16d6143ef908c98c304a8262d
Source dataset
uspto-grants-1991_03
Patent number
US05001126

Reaction notes

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