Hydrochloric Acid → HCID 53940607, compound

HRID 2071805Notes

Reaction equation

HRID 2071805 reaction equation
[C:1]([CH2:6][CH2:7][CH2:8][CH:9]=[CH:10][CH2:11][C:12]1(C([O-])=O)[C@@H:16]([CH:17]=[CH:18][C:19]([OH:26])([CH3:25])[CH2:20][CH2:21][CH2:22][CH2:23][CH3:24])[CH2:15][C@H:14](C([O-])=O)[C:13]1=[O:30])([O:3]CC)=[O:2].[OH-].[Na+].Cl>O.CO.[Cl-].[Na+]>[OH:26][C:19]([CH3:25])([CH2:20][CH2:21][CH2:22][CH2:23][CH3:24])[CH:18]=[CH:17][C@H:16]1[CH2:15][CH2:14][C:13](=[O:30])[C@H:12]1[CH2:11][CH:10]=[CH:9][CH2:8][CH2:7][CH2:6][C:1]([OH:3])=[O:2]

Participants

7

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 86735070HCID 86735070, compound

Product 1

HCID 53940607HCID 53940607, compound

Reagents, catalysts & solvents 3

HCID 887MethanolSolventHCID 962WaterSolventHCID 5234Sodium ChlorideSolvent

Procedure

The cyclopentanonetriester of formula 6, diethyl cis, trans-3-(6-carboethoxy-2-hexenyl)-4-(3-hydroxy-3-methyl-1-octenyl)-2-oxo-1,3-cyclopentanedicarboxylate (11.2 g), described in Example 45, is heated to reflux for 1 hr. in a solution of sodium hydroxide (13.4 g) in 80 ml of water and 110 ml of methanol. The mixture is cooled, adjusted to pH 5 with 2N HCl, diluted with saturated sodium chloride solution and extracted with ether. The ether extract is dried (Na2SO4) and concentrated. Chromatography on silica gel yields the title compound νmaxCHCl3 3580, 1740, 1720 cm-1, nmr (CDCl3) δ 0.88 (t, J = 5, 3H), 1.28 (s, 3H), 5.3 - 5.75 (m, 4H), 6.3 (2×s, 2H).

Workup

  1. temperatureis heated
  2. temperatureto reflux for 1 hr
  3. temperatureThe mixture is cooled
  4. extractionextracted with ether
  5. extractionThe ether extract
  6. dry with materialis dried (Na2SO4)
  7. concentrationconcentrated

Sources & evidence

ORD record
ord-e2ae98ccb075425f8ce02d6f87eb0c39
Source dataset
uspto-grants-1977_09
Patent number
US04048329

Reaction notes

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