Benzaldehyde, 3-(1,1,2,2-tetrafluoroethoxy)- → 3-(3-Phenoxyphenyl)-2-[3-(1,1,2,2-tetrafluoro-ethoxy)phenyl]-5-(trifluoromethyl)oxazolidine

HRID 1840203Notes

Reaction equation

HRID 1840203 reaction equation
[F:1][C:2]([F:15])([O:6][C:7]1[CH:8]=[C:9]([CH:12]=[CH:13][CH:14]=1)[CH:10]=[O:11])[CH:3]([F:5])[F:4].[O:16]([C:23]1[CH:24]=[C:25]([NH:29][CH2:30][CH:31](O)[C:32]([F:35])([F:34])[F:33])[CH:26]=[CH:27][CH:28]=1)[C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1>[Zn+2].[I-].[I-].C1(C)C=CC=CC=1>[O:16]([C:23]1[CH:24]=[C:25]([N:29]2[CH2:30][CH:31]([C:32]([F:33])([F:34])[F:35])[O:11][CH:10]2[C:9]2[CH:12]=[CH:13][CH:14]=[C:7]([O:6][C:2]([F:15])([F:1])[CH:3]([F:4])[F:5])[CH:8]=2)[CH:26]=[CH:27][CH:28]=1)[C:17]1[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=1

Participants

5

Reactant 2

HCID 118803Benzaldehyde, 3-(1,1,2,2-tetrafluoroethoxy)-HCID 235060633-[(n-3-Phenoxy-phenyl)amino]1,1,1-trifluoro-2-propanol

Product 1

HCID 101178453-(3-Phenoxyphenyl)-2-[3-(1,1,2,2-tetrafluoro-ethoxy)phenyl]-5-(trifluoromethyl)oxazolidineYield 92%

Reagents, catalysts & solvents 2

HCID 9883512zinc(II)iodideCatalystHCID 1140TolueneSolvent

Procedure

A toluene solution (5 mL) of 3-(1,1,2,2-tetrafluoroethoxy)benzaldehyde (0.45 g, 2.0 mol) and N-(3-phenoxyphenyl)-3-amino-1,1,1-trifluoro-2-propanol (0.60 g, 2.0 mmol) was refluxed in the presence of molecular sieves and ZnI2 (˜5 mg) for 18 h under N2. The reaction mixture was filtered to remove the sieves, and the filtrate was diluted with ethyl acetate. The organic layer was washed with brine, dried (MgSO4) and evaporated to give 0.92 g (92%) of the desired 3-(3-phenoxyphenyl)-2-[3-(1,1,2,2-tetrafluoro-ethoxy)phenyl]-5-(trifluoromethyl)oxazolidine product as a colorless oil. The formation of the desired product was monitored by the disappearance of the aldehyde peak (δ˜10) in the 1H NMR spectrum. HRMS calcd. 502.1253 [M+H]+, found: 502.1220.

Workup

  1. filtrationThe reaction mixture was filtered
  2. customto remove the sieves
  3. additionthe filtrate was diluted with ethyl acetate
  4. washThe organic layer was washed with brine
  5. dry with materialdried (MgSO4)
  6. customevaporated

Sources & evidence

ORD record
ord-77de5f4ebfee42eca9986f286e2eb565
Source dataset
uspto-grants-2004_01
Patent number
US06677379B2

Reaction notes

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