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Hydrochloric Acid → 3-{2-[6-(Tetrahydro-pyran-2-yloxycarbamoyl)-hexylcarbamoyl]-1H-indol-5-yl}-propionic acid

HRID 2276999
Notes
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Reaction equation

HRID 2276999 reaction equation
C([O:3][C:4](=[O:35])[CH2:5][CH2:6][C:7]1[CH:8]=[C:9]2[C:13](=[CH:14][CH:15]=1)[NH:12][C:11]([C:16](=[O:34])[NH:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][C:24](=[O:33])[NH:25][O:26][CH:27]1[CH2:32][CH2:31][CH2:30][CH2:29][O:28]1)=[CH:10]2)C.[OH-].[Na+].Cl>C1COCC1.CO>[O:28]1[CH2:29][CH2:30][CH2:31][CH2:32][CH:27]1[O:26][NH:25][C:24]([CH2:23][CH2:22][CH2:21][CH2:20][CH2:19][CH2:18][NH:17][C:16]([C:11]1[NH:12][C:13]2[C:9]([CH:10]=1)=[CH:8][C:7]([CH2:6][CH2:5][C:4]([OH:35])=[O:3])=[CH:15][CH:14]=2)=[O:34])=[O:33]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 579716953-{2-[6-(Tetrahydro-pyran-2-yloxycarbamoyl)-hexylcarbamoyl]-1H-indol-5-yl}-propionic acid ethyl ester

Product 1

HCID 579716513-{2-[6-(Tetrahydro-pyran-2-yloxycarbamoyl)-hexylcarbamoyl]-1H-indol-5-yl}-propionic acidYield 69%

Reagents, catalysts & solvents 1

HCID 21899815
MeOH tetrahydrofuran
Solvent

Procedure

3-{2-[6-(Tetrahydro-pyran-2-yloxycarbamoyl)-hexylcarbamoyl]-1H-indol-5-yl}-propionic acid ethyl ester (550 mg, 1.13 mmol) was dissolved in THF/methanol (50 ml/25 ml). 1.4 M NaOH solution (50 ml) was added and the reaction stirred at room temperature for 4 h. The solvent was reduced to ˜50% volume and 1M HCl added to pH 6-7. The mixture was extracted with DCM and further extracted with EtOAc. The combined organic layer was dried, Na2SO4 and the solvent removed in vacuo to give the required product 357 mg (69% yield) as a yellow powder which was used in the next step without further purification. LCMS purity 94%, m/z 460 [M++H]+

Workup

  1. additionadded to pH 6-7
  2. extractionThe mixture was extracted with DCM
  3. extractionfurther extracted with EtOAc
  4. customThe combined organic layer was dried
  5. customNa2SO4 and the solvent removed in vacuo

Sources & evidence

ORD record
ord-d4556dec45094965830de921cbc42cc1
Source dataset
uspto-grants-2015_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09133104B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes