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Hydrochloric Acid → 8-(4-(2-Butoxyethoxy)phenyl)-1-(2-methyl-2-propen-1-yl)-1,2,3,4-tetrahydro-1-benzoazocine-5-carboxylic acid

HRID 402273
Notes
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Reaction equation

HRID 402273 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:16]=[CH:17][C:18]3[N:25]([CH2:26][C:27]([CH3:29])=[CH2:28])[CH2:24][CH2:23][CH2:22][C:21]([C:30]([O:32]C)=[O:31])=[CH:20][C:19]=3[CH:34]=2)=[CH:11][CH:10]=1)[CH2:2][CH2:3][CH3:4].O1CCCC1.[OH-].[Na+].Cl>O.CO>[CH2:1]([O:5][CH2:6][CH2:7][O:8][C:9]1[CH:10]=[CH:11][C:12]([C:15]2[CH:16]=[CH:17][C:18]3[N:25]([CH2:26][C:27]([CH3:29])=[CH2:28])[CH2:24][CH2:23][CH2:22][C:21]([C:30]([OH:32])=[O:31])=[CH:20][C:19]=3[CH:34]=2)=[CH:13][CH:14]=1)[CH2:2][CH2:3][CH3:4]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 8028TetrahydrofuranHCID 14798Sodium HydroxideHCID 68649885Methyl 8-(4-(2-butoxyethoxy)phenyl)-1-(2-methyl-2-propen-1-yl)-1,2,3,4-tetrahydro-1-benzoazocine-5-carboxylate

Product 1

HCID 686498658-(4-(2-Butoxyethoxy)phenyl)-1-(2-methyl-2-propen-1-yl)-1,2,3,4-tetrahydro-1-benzoazocine-5-carboxylic acid
Yield 60.6%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 962WaterSolvent

Conditions

Temperature
60 °C

Procedure

To methyl 8-(4-(2-butoxyethoxy)phenyl)-1-(2-methyl-2-propen-1-yl)-1,2,3,4-tetrahydro-1-benzoazocine-5-carboxylate (1.65 g) were added tetrahydrofuran (45 ml) and methanol (45 ml), followed by adding an aqueous 1N sodium hydroxide solution (15 ml), and the mixture was stirred at 60° C. overnight. After cooling down to 0° C., water was added and the mixture was neutralized with 1N hydrochloric acid. After extracting with ethyl acetate, the organic layer was washed with saturated water and dried with magnesium sulfate. The solvent was distilled off under reduced pressure, and the resulting residue was recrystallized from hexane-ethyl acetate to give 8-(4-(2-butoxyethoxy)phenyl)-1-(2-methyl-2-propen-1-yl)-1,2,3,4-tetrahydro-1-benzoazocine-5-carboxylic acid (0.97 g) as yellow crystals.

Workup

  1. temperatureAfter cooling down to 0° C.
  2. extractionAfter extracting with ethyl acetate
  3. washthe organic layer was washed with saturated water
  4. dry with materialdried with magnesium sulfate
  5. distillationThe solvent was distilled off under reduced pressure
  6. customthe resulting residue was recrystallized from hexane-ethyl acetate

Sources & evidence

ORD record
ord-28ef85397c0b49dabca98c079bfb6d85
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