Acetic Acid → 3-Amino-6-{1-(tert-butoxycarbonyl)-5-[4-(2-hydroxyethyl)piperazin-1-ylmethyl]indol-2-yl}phthalimide

HRID 21000

Reaction equation

HRID 21000 reaction equation
[NH2:1][C:2]1[CH:12]=[CH:11][C:10]([C:13]2[N:14]([C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])[C:15]3[C:20]([CH:21]=2)=[CH:19][C:18]([CH:22]=O)=[CH:17][CH:16]=3)=[C:4]2[C:5]([NH:7][C:8](=[O:9])[C:3]=12)=[O:6].[OH:31][CH2:32][CH2:33][N:34]1[CH2:39][CH2:38][NH:37][CH2:36][CH2:35]1.C(O)(=O)C.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(=O)([O-])[O-].[Na+].[Na+]>C(#N)C.O>[NH2:1][C:2]1[CH:12]=[CH:11][C:10]([C:13]2[N:14]([C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])[C:15]3[C:20]([CH:21]=2)=[CH:19][C:18]([CH2:22][N:37]2[CH2:38][CH2:39][N:34]([CH2:33][CH2:32][OH:31])[CH2:35][CH2:36]2)=[CH:17][CH:16]=3)=[C:4]2[C:5]([NH:7][C:8](=[O:9])[C:3]=12)=[O:6]

Participants

8

Reactant 5

HCID 176Acetic AcidHCID 76771-(2-Hydroxyethyl)piperazineHCID 10340Sodium CarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 866282263-Amino-6-[1-(tert-butoxycarbonyl)-5-formylindol-2-yl]phthalimide

Product 1

HCID 684920373-Amino-6-{1-(tert-butoxycarbonyl)-5-[4-(2-hydroxyethyl)piperazin-1-ylmethyl]indol-2-yl}phthalimideYield 38.5%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6342AcetonitrileSolvent

Procedure

3-Amino-6-[1-(tert-butoxycarbonyl)-5-formylindol-2-yl]phthalimide (45.0 mg, 0.111 mmol) was dissolved in acetonitrile (2 mL), and the solution was added with 1-(2-hydroxyethyl)piperazine (57 mg, 0.440 mmol), acetic acid (0.508 mL, 8.87 mmol) and sodium triacetoxyborohydride (118 mg, 0.557 mmol), followed by stirring at room temperature for 2.5 hours. The reaction mixture was added with water and sodium carbonate, extracted with ethyl acetate. The organic layer was washed with saturated brine and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure and the residue was purified by flash column chromatography (hexane/ethyl acetate=4/1, 1/1) to obtain 3-amino-6-{1-(tert-butoxycarbonyl)-5-[4-(2-hydroxyethyl)piperazin-1-ylmethyl]indol-2-yl}phthalimide (22.2 mg, yield 38%).

Workup

  1. extractionextracted with ethyl acetate
  2. washThe organic layer was washed with saturated brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. customThe solvent was evaporated under reduced pressure
  5. customthe residue was purified by flash column chromatography (hexane/ethyl acetate=4/1, 1/1)

Sources & evidence

ORD record
ord-0a946f786c784e549ef91a1a15cd543b
Source dataset
uspto-grants-2010_06
Patent number
US07745641B2

Linked notes

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