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Water → ethyl 8-[4-(2-butoxyethoxy)phenyl]-3,4-dihydro-2H-1-benzoxocin-4-carboxylate

HRID 402256
Notes
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Reaction equation

HRID 402256 reaction equation
[CH2:1]([O:5][CH2:6][CH2:7][O:8][C:9]1[CH:14]=[CH:13][C:12]([C:15]2[CH:20]=[CH:19][C:18]([O:21][CH2:22][CH2:23]CCC(OCC)=O)=[C:17]([CH:31]=O)[CH:16]=2)=[CH:11][CH:10]=1)[CH2:2][CH2:3][CH3:4].[O-][CH2:34][CH3:35].[Na+].O.[C:38](=[O:45])([O:42][CH2:43][CH3:44])OCC>C(O)C>[CH2:1]([O:5][CH2:6][CH2:7][O:8][C:9]1[CH:14]=[CH:13][C:12]([C:15]2[CH:20]=[CH:19][C:18]3[O:21][CH2:22][CH2:23][CH:35]([C:38]([O:42][CH2:43][CH3:44])=[O:45])[CH:34]=[CH:31][C:17]=3[CH:16]=2)=[CH:11][CH:10]=1)[CH2:2][CH2:3][CH3:4]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 962WaterHCID 7766Diethyl CarbonateHCID 2723922Sodium ethoxideHCID 86595578HCID 86595578, compound

Product 1

HCID 68650309ethyl 8-[4-(2-butoxyethoxy)phenyl]-3,4-dihydro-2H-1-benzoxocin-4-carboxylate

Reagents, catalysts & solvents 1

HCID 702
Ethanol
Solvent

Conditions

Temperature
50 °C

Procedure

To a solution of ethyl 5-[[4′-(2-butoxyethoxy)-3-formyl [1,1′-biphenyl]-4-yl]oxy]pentanoate (6.00 g) in diethyl carbonate (60 ml) was added a solution of 20% sodium ethoxide in ethanol (5.55 g). The mixture was stirred at 50° C. for 2 hours under a nitrogen atmosphere. The solution was allowed to cool. Water was added and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated saline and dried over magnesium sulfate. After distilling off the solvent under reduced pressure, the residue was purified by silica gel column chromatography (hexane:ethyl acetate=5:1) to obtain yellowish oil of ethyl 8-[4-(2-butoxyethoxy)phenyl]-3,4-dihydro-2H-1-benzoxocin-4-carboxylate (527 mg).

Workup

  1. temperatureto cool
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe organic layer was washed with saturated saline
  4. dry with materialdried over magnesium sulfate
  5. distillationAfter distilling off the solvent under reduced pressure
  6. customthe residue was purified by silica gel column chromatography (hexane:ethyl acetate=5:1)

Sources & evidence

ORD record
ord-302b71c93411499ab8240d9d1d81cd27
Source dataset
uspto-grants-2014_06
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08741943B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes