Aluminium lithium hydride → 2-(2,4-dimethoxybenzyl)-5-morpholin-4-ylmethyl-2,3-dihydro-1H-isoindole

HRID 41406Notes

Reaction equation

HRID 41406 reaction equation
[CH3:1][O:2][C:3]1[CH:26]=[C:25]([O:27][CH3:28])[CH:24]=[CH:23][C:4]=1[CH2:5][N:6]1[CH2:14][C:13]2[C:8](=[CH:9][CH:10]=[C:11]([C:15]([N:17]3[CH2:22][CH2:21][O:20][CH2:19][CH2:18]3)=O)[CH:12]=2)[CH2:7]1.[H-].[Al+3].[Li+].[H-].[H-].[H-]>C1COCC1>[CH3:1][O:2][C:3]1[CH:26]=[C:25]([O:27][CH3:28])[CH:24]=[CH:23][C:4]=1[CH2:5][N:6]1[CH2:14][C:13]2[C:8](=[CH:9][CH:10]=[C:11]([CH2:15][N:17]3[CH2:22][CH2:21][O:20][CH2:19][CH2:18]3)[CH:12]=2)[CH2:7]1

Participants

4

Reactant 2

HCID 21226445Aluminium lithium hydrideHCID 59006996HCID 59006996, compound

Product 1

HCID 666723362-(2,4-dimethoxybenzyl)-5-morpholin-4-ylmethyl-2,3-dihydro-1H-isoindoleYield 33.6%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A solution of [2-(2,4-dimethoxybenzyl)-2,3-dihydro-1H-isoindol-5-yl]-morpholin-4-yl-methanone (1.05 g; 2.75 mmol) in dry THF (20 ml) under a nitrogen atmosphere was treated with 1M lithium aluminium hydride solution then stirred at room temperature overnight. The reaction was quenched by the cautious addition of saturated sodium sulphate solution, then diluted with EtOAc (40 ml), filtered through Celite™ and evaporated. Purification by flash column chromatography (2% then 5% MeOH/DCM as eluant) gave 340 mg of 2-(2,4-dimethoxybenzyl)-5-morpholin-4-ylmethyl-2,3-dihydro-1H-isoindole as a pale brown gum.

Workup

  1. customThe reaction was quenched by the cautious addition of saturated sodium sulphate solution
  2. additiondiluted with EtOAc (40 ml)
  3. filtrationfiltered through Celite™
  4. customevaporated
  5. customPurification by flash column chromatography (2%

Sources & evidence

ORD record
ord-49f3626f2c164220b2f30c6b01477a7b
Source dataset
uspto-grants-2013_09
Patent number
US08530469B2

Reaction notes

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