Acetic Acid → 4-(4-Bromophenyl)-3-[3-(tert-butyldimethylsilanyloxy)-3-(4-fluorophenyl)propyl]-1-(4-fluorophenyl)azetidin-2-one

HRID 1612539Notes

Reaction equation

HRID 1612539 reaction equation
[Br:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]([NH:42][C:43]2[CH:48]=[CH:47][C:46]([F:49])=[CH:45][CH:44]=2)[CH:9]([CH2:24][CH2:25][CH:26]([O:34][Si:35]([C:38]([CH3:41])([CH3:40])[CH3:39])([CH3:37])[CH3:36])[C:27]2[CH:32]=[CH:31][C:30]([F:33])=[CH:29][CH:28]=2)[C:10](N2C(C3C=CC=CC=3)COC2=O)=[O:11])=[CH:4][CH:3]=1.C[Si](C([Si](C)(C)C)C(N)=O)(C)C.O.O.O.[F-].C([NH+](CCCC)CCCC)CCC.C(O)(=O)C>COC(C)(C)C>[Br:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]2[N:42]([C:43]3[CH:48]=[CH:47][C:46]([F:49])=[CH:45][CH:44]=3)[C:10](=[O:11])[CH:9]2[CH2:24][CH2:25][CH:26]([O:34][Si:35]([C:38]([CH3:40])([CH3:41])[CH3:39])([CH3:37])[CH3:36])[C:27]2[CH:32]=[CH:31][C:30]([F:33])=[CH:29][CH:28]=2)=[CH:4][CH:3]=1

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 11708267BistrimethylsilylacetamidHCID 22252057Tributylammonium fluoride trihydrateHCID 222520673-[2-[(4-Bromophenyl)-(4-fluorophenylamino)methyl]-5-(tert-butyl-dimethylsilanyloxy)-5-(4-fluorophenyl)pentanoyl]-4-phenyloxazolidin-2-one

Product 1

HCID 222520774-(4-Bromophenyl)-3-[3-(tert-butyldimethylsilanyloxy)-3-(4-fluorophenyl)propyl]-1-(4-fluorophenyl)azetidin-2-one

Reagents, catalysts & solvents 1

HCID 15413tert-Butyl methyl etherSolvent

Procedure

3.34 g of 3-[2-[(4-bromophenyl)-(4-fluorophenylamino)methyl]-5-(tert-butyl-dimethylsilanyloxy)-5-(4-fluorophenyl)pentanoyl]-4-phenyloxazolidin-2-one are suspended in 70 ml of tert-butyl methyl ether. 3.8 ml of bis(trimethylsilyl)acetamide and 144 mg of tributylammonium fluoride trihydrate are then added. The reaction mixture is stirred at room temperature overnight, and 0.7 ml of glacial acetic acid are then added. The reaction mixture is concentrated using a rotary evaporator and the residue is purified by column chromatography (SiO2; ethyl acetate/heptane 1:4). The product is obtained as a clear oil. C30H34BrF2NO2Si (586) MS (ESI): M+−131

Workup

  1. concentrationThe reaction mixture is concentrated
  2. customa rotary evaporator
  3. customthe residue is purified by column chromatography (SiO2; ethyl acetate/heptane 1:4)
  4. customThe product is obtained as a clear oil

Sources & evidence

ORD record
ord-b04941056560465e99056ea115285397
Source dataset
uspto-grants-2006_01
Patent number
US06992067B2

Reaction notes

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