Aluminium lithium hydride → 2,6-dichloro-N-[(1R)-2-[2-(2,6-dichlorophenyl)-6-quinolinyl]-1-(hydroxymethyl)ethyl]benzamide

HRID 1869815Notes

Reaction equation

[Cl:1][C:2]1[CH:34]=[CH:33][CH:32]=[C:31]([Cl:35])[C:3]=1[C:4]([NH:6][C@H:7]([CH2:12][C:13]1[CH:14]=[C:15]2[C:20](=[CH:21][CH:22]=1)[N:19]=[C:18]([C:23]1[C:28]([Cl:29])=[CH:27][CH:26]=[CH:25][C:24]=1[Cl:30])[CH:17]=[CH:16]2)[C:8](OC)=[O:9])=[O:5].[H-].[H-].[H-].[H-].[Li+].[Al+3]>C1COCC1>[Cl:1][C:2]1[CH:34]=[CH:33][CH:32]=[C:31]([Cl:35])[C:3]=1[C:4]([NH:6][C@@H:7]([CH2:8][OH:9])[CH2:12][C:13]1[CH:14]=[C:15]2[C:20](=[CH:21][CH:22]=1)[N:19]=[C:18]([C:23]1[C:28]([Cl:29])=[CH:27][CH:26]=[CH:25][C:24]=1[Cl:30])[CH:17]=[CH:16]2)=[O:5]

Participants

Conditions

Temperature: 0 °C

Procedure

To methyl (2R)-2-[(2,6-dichlorobenzoyl)amino]-3-[2-(2,6-dichlorophenyl)-6-quinolinyl]propanoate 36 (0,222 g) in THF (1 ml) is added, at 0° C., LiAlH4 (1.5 equ.). The solution is stirred at 0° C. for 1 hour. The reaction is quenched at −25° C. by successive additions of water (25 μl), 15% NaOH (25 μl) and water (75 μl). After evaporation of THF under vacuum, AcOEt is added. The organic phases are washed with water, brine, dried over MgSO4 and evaporated. The resulting residue is purified over silica gel using CH2Cl2/CH3OH/NH4OH (99/1/0.1) as eluent to give 2,6-dichloro-N-[(1R)-2-[2-(2,6-dichlorophenyl)-6-quinolinyl]-1-(hydroxymethyl)ethyl]benzamide 60.

Workup

customThe reaction is quenched at −25° C. by successive additions of water (25 μl), 15% NaOH (25 μl) and water (75 μl)
customAfter evaporation of THF under vacuum, AcOEt
additionis added
washThe organic phases are washed with water, brine
dry with materialdried over MgSO4
customevaporated
customThe resulting residue is purified over silica gel

Sources & evidence

ORD record: ord-1c00855592314e91bf7f2012ac816d12
Source dataset: uspto-grants-2009_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07638630B2

Reaction notes

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