Hydrochloric Acid → HCID 178418574, compound

HRID 5250

Reaction equation

HRID 5250 reaction equation
[CH2:1]1[C:6](=[O:7])[O:5][CH2:4][C:2]1=[O:3].C(N(CC)CC)C.Cl.CN(C)CCCN=C=NCC.[Cl:27][C:28]1[CH:45]=[CH:44][C:31]([O:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][CH2:38][CH2:39][CH2:40][C:41](O)=[O:42])=[CH:30][CH:29]=1.Cl>CN(C)C=O.CN(C)C1C=CN=CC=1.CO.C(OCC)(=O)C>[Cl:27][C:28]1[CH:45]=[CH:44][C:31]([O:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][CH2:38][CH2:39][CH2:40][C:41]([C:1]2[C:6](=[O:7])[O:5][CH2:4][C:2]=2[OH:3])=[O:42])=[CH:30][CH:29]=1

Participants

9

Reactant 5

HCID 313Hydrochloric AcidHCID 8471TriethylamineHCID 521261Tetronic acidHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 229027929-(4-Chlorophenoxy)nonanoic acid

Product 1

HCID 178418574HCID 178418574, compoundYield 30%

Reagents, catalysts & solvents 3

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6228DimethylformamideSolventHCID 21584119Ethylacetate methanolSolvent

Procedure

To a stirring solution of 736 mg (7.36 mmol) of tetronic acid in 30 mL of dimethylformamide is added 1.2 mL (8.09 mmol) of triethylamine and 300 mg of 4-dimethylaminopyridine at 0° C. Next, 1.7 g (8.86 mmol) of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and 2.6 g (8.06 mmol) of 9-(4-chlorophenoxy)nonanoic acid are added and the reaction is stirred overnight at room temperature. The reaction is acidified with 1.0 N HCl and extracted with four 50 mL portions of ether. The combined organic layers are dried over MgSO4 and concentrated in vacuo affording crude compound. Pure material is obtained by flash chromatography with 10% methanol/ethyl acetate as eluant affording 800 mg (30%) of 3-[9-(4-chlorophenoxy)-1-oxononyl]4-hydroxy-2(5H)-furanone.

Workup

  1. extractionextracted with four 50 mL portions of ether
  2. dry with materialThe combined organic layers are dried over MgSO4
  3. concentrationconcentrated in vacuo
  4. customaffording crude compound

Sources & evidence

ORD record
ord-fe7b1958be8d4b2ab72860d32d3007d3
Source dataset
uspto-grants-1993_09
Patent number
US05242945

Linked notes

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