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Aluminium lithium hydride → HCID 17747058, compound

HRID 1716620
Notes
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Reaction equation

HRID 1716620 reaction equation
[H-].[H-].[H-].[H-].[Li+].[Al+3].CO[C:9](=O)[NH:10][CH2:11][CH2:12][CH:13]([C:20]1[CH:28]=[CH:27][CH:26]=[C:25]2[C:21]=1[CH:22]=[CH:23][NH:24]2)[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1>C1COCC1>[NH:24]1[C:25]2[C:21](=[C:20]([CH:13]([C:14]3[CH:15]=[CH:16][CH:17]=[CH:18][CH:19]=3)[CH2:12][CH2:11][NH:10][CH3:9])[CH:28]=[CH:27][CH:26]=2)[CH:22]=[CH:23]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

4

Reactant 2

HCID 21226445Aluminium lithium hydride2×HCID 59831668HCID 59831668, compound

Product 1

HCID 17747058HCID 17747058, compoundYield 75.7%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent3×

Conditions

Temperature
0 °C

Procedure

To a 0° C. stirring suspension of LiAlH4 (0.062 g, 1.69 mmol) in THF (12 ml) under N2 was added a solution [3-(1H-indol-4-yl)-3-phenyl-propyl]-carbamic acid methylester (V) (0.46 g, 1.5 mmol) in THF (7 ml). The resulting mixture was stirred for 15 minutes at room temperature, after which a suspension of LiAlH4 (0.11 g, 3 mmol) in THF (5 ml) was added. The reaction mixture was then refluxed for about 2.5 hours, cooled to about 0° C., and quenched by addition of freshly ground Na2SO4. 10H2O (8 g). The resulting mixture was stirred vigorously for about 30 minutes and filtered with the aid of EtOAc. The filtrate was concentrate and purified via flash chromatography (DCM/MeOH/NH4OH) affording [3-(1H-Indol-4-yl)-3-phenyl-propyl]-methyl-amine (0.30 g, 75% yield). To a 0° C. stirring solution of the above amine (0.24 g, 0.90 mmol) in Et2O (10 ml) was added HCl (2 M in Et2O, 0.5 ml, 1.0 mmol). The resulting precipitate was filtered and washed with water and Et2O. The white solid was dried in vacuo affording [3-(1H-indol-4-yl)-3-phenyl-propyl]-methyl-amine (VI) as a hydrochloride salt, (0.21 g, 78% yield). MS (M+H)=265.

Workup

  1. stirringThe resulting mixture was stirred for 15 minutes at room temperature
  2. additionwas added
  3. temperatureThe reaction mixture was then refluxed for about 2.5 hours
  4. temperaturecooled to about 0° C.
  5. customquenched by addition of freshly ground Na2SO4
  6. stirringThe resulting mixture was stirred vigorously for about 30 minutes
  7. filtrationfiltered with the aid of EtOAc
  8. concentrationThe filtrate was concentrate
  9. custompurified via flash chromatography (DCM/MeOH/NH4OH)

Sources & evidence

ORD record
ord-79ce788a669f4da3a4c88c53d1c7fcde
Source dataset
uspto-grants-2010_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07803830B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes