Sodium Hydroxide → HCID 9944251, compound

HRID 1352815Notes

Reaction equation

HRID 1352815 reaction equation
[Cl:1][C:2]1[CH:15]=[CH:14][C:13]([C:16]([O:18]C)=[O:17])=[CH:12][C:3]=1[CH2:4][CH:5]1[CH2:10][CH2:9][CH2:8][S:7][C:6]1=[O:11].[OH-:20].[Na+]>C1COCC1>[C:16]([C:13]1[CH:14]=[CH:15][C:2]([Cl:1])=[C:3]([CH2:4][CH:5]([CH2:10][CH2:9][CH2:8][SH:7])[C:6]([OH:11])=[O:20])[CH:12]=1)([OH:18])=[O:17]

Participants

4

Reactant 2

HCID 14798Sodium HydroxideHCID 12144657HCID 12144657, compound

Product 1

HCID 9944251HCID 9944251, compoundYield 90%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A solution of 3-(2-Chloro-5-methoxycarbonyl-benzyl)tetrahydrothiopyrane-2-one IV (9.26 g, 31.0 mmol) in THF (70 mL) was purged for 15 minutes with nitrogen. A degassed aqueous sodium hydroxide solution (2.2 M, 70 mL, 154 mmol) was added to the solution and the mixture was stirred at room temperature under nitrogen overnight. The reaction mixture was washed with ether, acidified by 3N HCl at 0° C., and extracted with ether. The extract was dried over MgSO4 and concentrated to afford 5-carboxy-2-chloro-alpha-(3-mercaptopropyl) benzenepropanoic acid (8.42 g, 27.8 mmol, 90%) as a white solid: 1H NMR (CD3OD) δ 1.50-1.80 (m, 4H), 2.35-2.50 (m, 2H), 2.65-2.75 (m, 1H), 2.91 (dd, J=6.2, 13.8 Hz, 1H), 2.96 (dd, J=8.8, 13.8 Hz, 1 H), 7.39 (d, J=8.3 Hz, 1H), 7.76 (dd, J=2.0, 8.3 Hz, 1H), 7.86 (d, J=2.0 Hz, 1H); 13C NMR (CD3OD) δ25.1, 32.5, 33.2, 37.4, 46.8, 130.8, 131.2, 134.0, 139.1, 140.5, 169.2, 178.9. Elemental analysis calculated for C13H15ClO4S: C, 51.57; H, 4.99; S, 10.59; Cl, 11.71. Found: C, 51.59; H, 4.94; S, 10.43; Cl, 11.80.

Workup

  1. washThe reaction mixture was washed with ether
  2. customacidified by 3N HCl at 0° C.
  3. extractionextracted with ether
  4. dry with materialThe extract was dried over MgSO4
  5. concentrationconcentrated

Sources & evidence

ORD record
ord-bd969fbb34aa42ef80d4e4c35e639cb4
Source dataset
uspto-grants-2007_05
Patent number
US07220780B2

Reaction notes

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