Ethanol → 2-methyl-4-(3-methylindol-2-yl)-2-[(5-methyl-1-trityl-1H-imidazol-4-yl)methyl]butyric acid

HRID 486221Notes

Reaction equation

HRID 486221 reaction equation
[CH3:1][C:2]1([CH2:17][C:18]2[N:19]=[CH:20][N:21]([C:24]([C:37]3[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=3)([C:31]3[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=3)[C:25]3[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=3)[C:22]=2[CH3:23])[C:15](=[O:16])[N:6]2[C:7]3[C:12]([C:13]([CH3:14])=[C:5]2[CH2:4][CH2:3]1)=[CH:11][CH:10]=[CH:9][CH:8]=3.[OH-].[Na+].C([OH:47])C>O1CCOCC1>[CH3:1][C:2]([CH2:17][C:18]1[N:19]=[CH:20][N:21]([C:24]([C:25]2[CH:26]=[CH:27][CH:28]=[CH:29][CH:30]=2)([C:31]2[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=2)[C:37]2[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=2)[C:22]=1[CH3:23])([CH2:3][CH2:4][C:5]1[NH:6][C:7]2[C:12]([C:13]=1[CH3:14])=[CH:11][CH:10]=[CH:9][CH:8]=2)[C:15]([OH:47])=[O:16]

Participants

5

Reactant 3

HCID 702EthanolHCID 14798Sodium HydroxideHCID 100532708,9-dihydro-7,10-dimethyl-7-[(5-methyl-1-trityl-1H-imidazol-4-yl)methyl]pyrido[1,2-a]indol-6(7H)-one

Product 1

HCID 104155442-methyl-4-(3-methylindol-2-yl)-2-[(5-methyl-1-trityl-1H-imidazol-4-yl)methyl]butyric acid

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent

Conditions

Temperature
90 °C

Procedure

A mixture of 8,9-dihydro-7,10-dimethyl-7-[(5-methyl-1-trityl-1H-imidazol-4-yl)methyl]pyrido[1,2-a]indol-6(7H)-one (3.78 g), aqueous 3N sodium hydroxide solution (10 ml), ethanol (10 ml) and dioxane (5 ml) was heated at 90° C. for 30 hours. After evaporation of the solvent, the residue was diluted with water, neutralized with aqueous oxalic acid solution, and extracted three times with chloroform. The chloroform layer was washed with water and brine, dried over anhydrous sodium sulfate, and evaporated in vacuo to give 2-methyl-4-(3-methylindol-2-yl)-2-[(5-methyl-1-trityl-1H-imidazol-4-yl)methyl]butyric acid (3.3 g) as an amorphous powder. The product was used in the next reaction without purification.

Workup

  1. customAfter evaporation of the solvent
  2. additionthe residue was diluted with water
  3. extractionextracted three times with chloroform
  4. washThe chloroform layer was washed with water and brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. customevaporated in vacuo

Sources & evidence

ORD record
ord-818f80beffc94a4281194815d3ef0250
Source dataset
uspto-grants-1994_03
Patent number
US05290785

Reaction notes

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