Hydrochloric Acid → 6-Hydroxyhexanoic Acid

HRID 1941714Notes

Reaction equation

HRID 1941714 reaction equation
[C:1]1(=[O:8])[O:7][CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[OH-:9].[K+].CO.Cl>C1COCC1>[OH:9][CH2:6][CH2:5][CH2:4][CH2:3][CH2:2][C:1]([OH:7])=[O:8]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 887MethanolHCID 10401epsilon-CAPROLACTONE2×HCID 14797Potassium Hydroxide

Product 1

HCID 144906-Hydroxyhexanoic Acid

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

First, the synthesis of Compound 20 was preformed following the procedure reported in PCT/JP2005/004389. 6-Hydroxyhexanoic acid was synthesized by base hydrolysis of caprolactone. Caprolactone (100 g) was added to a mixture of potassium hydroxide (145 g), methanol (110 mL), and THF (390 mL). The resulting mixture was stirred at room temperature overnight. The solution was then acidified with HCl and extracted with ethyl acetate. The combined organic layers were washed with water, dried, filtered, and concentrated to obtain 6-hydroxyhexanoic acid. 1H NMR (CDCl3, 500 MHz) δ 1.44 (m, 2H), 1.60 (m, 2H), 1.68 (m, 2H), 2.37 (t, J=7.5 Hz, 2H), 3.66 (t, J=6.5 Hz, 2H), 5.80 (br, 1H).

Workup

  1. extractionextracted with ethyl acetate
  2. washThe combined organic layers were washed with water
  3. customdried
  4. filtrationfiltered
  5. concentrationconcentrated

Sources & evidence

ORD record
ord-36ac30b23ff944f596ec67d93eeb3561
Source dataset
uspto-grants-2013_03
Patent number
US08388860B2

Reaction notes

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