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Hydrochloric Acid → 2-{4-[5-(Cyclopropyl-methyl-amino)-4-methoxy-8,8-dimethyl-5,6,7,8-tetrahydro-naphthalen-2-ylethynyl]-phenyl}-propionic acid

HRID 1765789
Notes
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Reaction equation

HRID 1765789 reaction equation
C[O:2][C:3](=[O:33])[CH:4]([C:6]1[CH:11]=[CH:10][C:9]([C:12]#[C:13][C:14]2[CH:23]=[C:22]([O:24][CH3:25])[C:21]3[CH:20]([N:26]([CH:28]4[CH2:30][CH2:29]4)[CH3:27])[CH2:19][CH2:18][C:17]([CH3:32])([CH3:31])[C:16]=3[CH:15]=2)=[CH:8][CH:7]=1)[CH3:5].[OH-].[K+].Cl>CO.O1CCCC1>[CH:28]1([N:26]([CH3:27])[CH:20]2[CH2:19][CH2:18][C:17]([CH3:31])([CH3:32])[C:16]3[CH:15]=[C:14]([C:13]#[C:12][C:9]4[CH:8]=[CH:7][C:6]([CH:4]([CH3:5])[C:3]([OH:33])=[O:2])=[CH:11][CH:10]=4)[CH:23]=[C:22]([O:24][CH3:25])[C:21]2=3)[CH2:29][CH2:30]1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 14797Potassium HydroxideHCID 574242452-{4-[5-(Cyclopropyl-methyl-amino)-4-methoxy-8,8-dimethyl-5,6,7,8-tetrahydro-naphthalen-2-ylethynyl]-phenyl}-propionic acid methyl ester2×

Product 1

HCID 211071292-{4-[5-(Cyclopropyl-methyl-amino)-4-methoxy-8,8-dimethyl-5,6,7,8-tetrahydro-naphthalen-2-ylethynyl]-phenyl}-propionic acidYield 56%

Reagents, catalysts & solvents

2
HCID 887MethanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

A solution of 2-{4-[5-(cyclopropyl-methyl-amino)-4-methoxy-8,8-dimethyl-5,6,7,8-tetrahydro-naphthalen-2-ylethynyl]-phenyl}-propionic acid methyl ester (Intermediate 84, 0.115 g, 0.26 mmol) in methanol (3 mL) and tetrahydrofuran (2 mL) was treated with a 3M solution of potassium hydroxide (1 mL, 3 mmol) and the resulting reaction mixture was stirred at ambient temperature overnight. The reaction mixture was neutralized with 5% aqueous hydrochloric acid and extracted with ethyl acetate. The organic phase was washed with water and brine, and dried over anhydrous magnesium sulfate, filtered and evaporated in vacuo to a residue that was subjected to flash column chromatography over silica gel (230400 mesh) using 8% methanol in ethyl acetate as the eluent to afford the title product as a yellow solid (0.062 g, 56%).

Workup

  1. customthe resulting reaction mixture
  2. extractionextracted with ethyl acetate
  3. washThe organic phase was washed with water and brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. filtrationfiltered
  6. customevaporated in vacuo to a residue that

Sources & evidence

ORD record
ord-5369c0f4cfaa46f9b3597d59fe678a2f
Source dataset
uspto-grants-2007_06
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07226951B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes