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

HRID 348041Notes

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 (4) were dissolved in 90 ml of ethanol. 10 ml of conc. ammonia solution and an excess of Raney nickel were added, and the mixture was stirred at 60° C. and a hydrogen pressure of 10 bar for 8 h. Overnight, the reaction mixture cooled to room temperature. The next day, the catalyst was removed, the filtrate was concentrated under reduced pressure and the residue was purified by silica gel chromatography using dichloromethane/methanol/ammonia solution 10/1/0.1. This produced 1-(4-aminomethylphenyl)-3-[3-(4-fluorophenyl)-3-hydroxypropyl]-4-(4-methoxyphenyl)-azetidin-2-one (5) of molecular weight 434.51 (C26H27FN203); MS (ESI): 418.2 (MH+-NH3).

Workup

temperatureOvernight, the reaction mixture cooled to room temperature
customThe next day, the catalyst was removed
concentrationthe filtrate was concentrated under reduced pressure
customthe residue was purified by silica gel chromatography

Sources & evidence

ORD record: ord-d27914cdf19a454399062b9bdece2d35
Source dataset: uspto-grants-2007_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07176194B2

Reaction notes

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