Ammonium Chloride → 1-Acridinol, 1,2,3,4-tetrahydro-9-(((3-fluorophenyl)methyl)amino)-

HRID 1904731Notes

Reaction equation

HRID 1904731 reaction equation
[F:1][C:2]1[CH:3]=[C:4]([CH:22]=[CH:23][CH:24]=1)[CH2:5][NH:6][C:7]1[C:8]2[C:13]([N:14]=[C:15]3[C:20]=1[C:19](=[O:21])[CH2:18][CH2:17][CH2:16]3)=[CH:12][CH:11]=[CH:10][CH:9]=2.[H-].[Al+3].[Li+].[H-].[H-].[H-].[Cl-].[NH4+]>C1COCC1>[F:1][C:2]1[CH:3]=[C:4]([CH:22]=[CH:23][CH:24]=1)[CH2:5][NH:6][C:7]1[C:8]2[C:13]([N:14]=[C:15]3[C:20]=1[CH:19]([OH:21])[CH2:18][CH2:17][CH2:16]3)=[CH:12][CH:11]=[CH:10][CH:9]=2

Participants

5

Reactant 3

HCID 25517Ammonium ChlorideHCID 13935131HCID 13935131, compoundHCID 21226445Aluminium lithium hydride

Product 1

HCID 30256191-Acridinol, 1,2,3,4-tetrahydro-9-(((3-fluorophenyl)methyl)amino)-Yield 82.8%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

In 100 ml of THF was dissolved 3.00 g of 3,4-dihydro-9-(3-fluorobenzylamino)acridin-1(2H)-one. The mechanically stirred solution was cooled in ice under nitrogen and 4.68 ml of 1M lithium aluminum hydride in THF was added dropwise over 15 minutes. After 0.5 hour, analysis by TLC indicated the reaction was complete, so it was neutralized with 1 ml of saturated ammonium chloride solution and the resulting salts were filtered. The filtrate was evaporated to an oil which crystallized on trituration with pentane. The solid was filtered and recrystallized from 1:1 dichloromethane/pentane to yield 2.50 g of solid, mp 128° C.

Workup

  1. temperatureThe mechanically stirred solution was cooled in ice under nitrogen
  2. filtrationthe resulting salts were filtered
  3. customThe filtrate was evaporated to an oil which
  4. customcrystallized on trituration with pentane
  5. filtrationThe solid was filtered
  6. customrecrystallized from 1:1 dichloromethane/pentane

Sources & evidence

ORD record
ord-bea4ab96c8914a63839364fe916880d0
Source dataset
uspto-grants-1989_06
Patent number
US04839364

Reaction notes

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