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Water → 1-(Tert-butoxycarbonyl)-5-(3-dimethylamino-2-propyn-1-yl)indole

HRID 20991
Notes
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Reaction equation

HRID 20991 reaction equation
[C:1]([O:5][C:6]([N:8]1[C:16]2[C:11](=[CH:12][C:13](I)=[CH:14][CH:15]=2)[CH:10]=[CH:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH3:18][N:19]([CH3:23])[CH2:20][C:21]#[CH:22].O>C(NCC)C.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[C:1]([O:5][C:6]([N:8]1[C:16]2[C:11](=[CH:12][C:13]([CH2:22][C:21]#[C:20][N:19]([CH3:23])[CH3:18])=[CH:14][CH:15]=2)[CH:10]=[CH:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 3

HCID 962WaterHCID 81643N,N-DimethylpropargylamineHCID 161259585-Iodo-1H-indole, N-BOC protected

Product 1

HCID 684934291-(Tert-butoxycarbonyl)-5-(3-dimethylamino-2-propyn-1-yl)indoleYield 90%

Reagents, catalysts & solvents 2

HCID 178418476HCID 178418476, compoundCatalyst
HCID 8021
Diethylamine
Solvent

Conditions

Temperature
80 °C

Procedure

1-(tert-Butoxycarbonyl)-5-iodoindole (1.00 g, 2.91 mmol) was dissolved in diethylamine (20 mL), and the solution was added with bis(triphenylphosphine)dichloropalladium (163 mg, 0.233 mmol), cuprous iodide (44.4 mg, 0.233 mmol) and 1-dimethylamino-2-propyne (0.628 mL, 5.82 mmol), followed by stirring at 80° C. for 7.0 hours. The reaction mixture was added with water and 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. The residue was purified by preparative thin-layer chromatography (chloroform/methanol=19/1) to obtain 1-(tert-butoxycarbonyl)-5-(3-dimethylamino-2-propyn-1-yl)indole (0.78 g, yield 90%).

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 preparative thin-layer chromatography (chloroform/methanol=19/1)

Sources & evidence

ORD record
ord-a8a7964606714175a8ec31928416e35e
Source dataset
uspto-grants-2010_06
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07745641B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes