Ammonia → 1-(4-Aminomethylphenyl)-3-[3-(4-fluorophenyl)-3-hydroxypropyl]-4-(4-methoxyphenyl)azetidin-2-one

HRID 1725295Notes

Reaction equation

[F:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]([OH:32])[CH2:9][CH2:10][CH:11]2[C:14](=[O:15])[N:13]([C:16]3[CH:23]=[CH:22][C:19]([C:20]#[N:21])=[CH:18][CH:17]=3)[CH:12]2[C:24]2[CH:29]=[CH:28][C:27]([O:30][CH3:31])=[CH:26][CH:25]=2)=[CH:4][CH:3]=1.N.[H][H]>C(O)C.[Ni]>[NH2:21][CH2:20][C:19]1[CH:22]=[CH:23][C:16]([N:13]2[CH:12]([C:24]3[CH:29]=[CH:28][C:27]([O:30][CH3:31])=[CH:26][CH:25]=3)[CH:11]([CH2:10][CH2:9][CH:8]([C:5]3[CH:4]=[CH:3][C:2]([F:1])=[CH:7][CH:6]=3)[OH:32])[C:14]2=[O:15])=[CH:17][CH:18]=1

Participants

Conditions

Temperature: 60 °C

Procedure

1.22 g of 4-[3-[3-(4-fluorophenyl)-3-hydroxypropyl]-2-(4-methoxyphenyl)-4-oxoazetidin-1-yl]benzonitrile are dissolved in 90 ml of ethanol, 10 ml of conc. ammonia solution and an excess of Raney nickel are added and the mixture is stirred at 60° C. and a hydrogen pressure of 10 bar for 8 h. Overnight, the reaction mixture cools to room temperature. The next day, the catalyst is separated off, the filtrate is concentrated under reduced pressure and the residue is purified chromatographically on silica gel using dichloromethane/methanol/ammonia solution 10/1/0.1. This gives 1-(4-aminomethylphenyl)-3-[3-(4-fluorophenyl)-3-hydroxypropyl]-4-(4-methoxyphenyl)azetidin-2-one of molecular weight 434.51 (C26H27FN2O3); MS (ESI): 418.2 (MH+—NH3).

Workup

customOvernight
customcools to room temperature
customThe next day, the catalyst is separated off
concentrationthe filtrate is concentrated under reduced pressure
customthe residue is purified chromatographically on silica gel

Sources & evidence

ORD record: ord-ad35dbe2f6f3495ab1008e9c436452ee
Source dataset: uspto-grants-2009_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07488829B2

Reaction notes

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