Hydrochloric Acid → (E)-7-(2,4-Dichloro-6-phenylmethoxyphenyl)-3,5-dihydroxy-6-heptenoic acid

HRID 354568Notes

Reaction equation

HRID 354568 reaction equation
[Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[C:4]([O:9][CH2:10][C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)[C:3]=1/[CH:17]=[CH:18]/[CH:19]([OH:28])[CH2:20][CH:21]([OH:27])[CH2:22][C:23]([O:25]C)=[O:24].[OH-].[Na+].C(O)C.Cl>O>[Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[C:4]([O:9][CH2:10][C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)[C:3]=1/[CH:17]=[CH:18]/[CH:19]([OH:28])[CH2:20][CH:21]([OH:27])[CH2:22][C:23]([OH:25])=[O:24]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 702EthanolHCID 14798Sodium HydroxideHCID 12802890Methyl (E)-7-(2,4-Dichloro-6-phenylmethoxyphenyl)-3,5-dihydroxy-6-heptenoate

Product 1

HCID 12802891(E)-7-(2,4-Dichloro-6-phenylmethoxyphenyl)-3,5-dihydroxy-6-heptenoic acidYield 99%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A solution of methyl (E)-7-(2,4-dichloro-6-phenylmethoxyphenyl)-3,5-dihydroxy-6-heptenoate (34.8 g, 81.8 mmole), 1 N sodium hydroxide (82 ml, 82 mmole) and ethanol (200 ml) was stirred at 25° C. for 15 min. The reaction solution was acidified with 6 N hydrochloric acid, diluted with water (400 ml) and extracted with ether (3×200 ml). The combined organic extracts were washed with brine (3×100 ml), dried over magnesium sulfate and filtered. The filtrate was evaporated in vacuo, leaving the title compound as an orange oil (33.3 g, 99%): pmr (CDCl3) δ2.47 (2H, d), 4.30 (2H, br m), 4.98 (2H, s), 7.30 (5H, s).

Workup

  1. extractionextracted with ether (3×200 ml)
  2. washThe combined organic extracts were washed with brine (3×100 ml)
  3. dry with materialdried over magnesium sulfate
  4. filtrationfiltered
  5. customThe filtrate was evaporated in vacuo

Sources & evidence

ORD record
ord-fb72aaded9cb4d569f8f7d9ec3b986d2
Source dataset
uspto-grants-1983_03
Patent number
US04375475

Reaction notes

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