Trifluoromethanesulfonic anhydride → (2-Cyano-5-methoxyphenyl)trifluoromethanesulphonate

HRID 654368Notes

Reaction equation

HRID 654368 reaction equation
[F:1][C:2]([F:15])([F:14])[S:3]([O:6]S(C(F)(F)F)(=O)=O)(=[O:5])=[O:4].[C:16]([C:18]1[CH:23]=[CH:22][C:21]([O:24][CH3:25])=[CH:20][C:19]=1O)#[N:17]>N1C=CC=CC=1>[C:16]([C:18]1[CH:23]=[CH:22][C:21]([O:24][CH3:25])=[CH:20][C:19]=1[O:6][S:3]([C:2]([F:15])([F:14])[F:1])(=[O:5])=[O:4])#[N:17]

Participants

4

Reactant 2

HCID 67749Trifluoromethanesulfonic anhydrideHCID 114236802-Hydroxy-4-methoxybenzonitrile

Product 1

HCID 19771853(2-Cyano-5-methoxyphenyl)trifluoromethanesulphonateYield 81.1%

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

Trifluoromethanesulphonic anhydride (2.06 g) was added dropwise to a solution of 2-cyano-5-methoxyphenol (1.0 g) in dry pyridine (20 ml) at 0° C. under an atmosphere of argon. Volatile material was removed by evaporation and the residue was dissolved in ethyl acetate (30 ml). The solution was washed with water (60 ml) and saturated sodium chloride solution (30 ml) and dried (MgSO4). The solvent was removed by evaporation and the residue purified by flash chromatography, eluting with ethyl acetate/hexane (1:3 v/v), to give (2-cyano-5-methoxyphenyl)trifluoromethanesulphonate (1.53 g) as an oil; NMR (CDCl3): 3.9(s,3H), 6.95(d,1H), 7.0(d,1H), 7.7(d,1H).

Workup

  1. customVolatile material was removed by evaporation
  2. dissolutionthe residue was dissolved in ethyl acetate (30 ml)
  3. washThe solution was washed with water (60 ml) and saturated sodium chloride solution (30 ml)
  4. dry with materialdried (MgSO4)
  5. customThe solvent was removed by evaporation
  6. customthe residue purified by flash chromatography
  7. washeluting with ethyl acetate/hexane (1:3 v/v)

Sources & evidence

ORD record
ord-d2d74b3b03554563a9e3a6dc878eec83
Source dataset
uspto-grants-1992_07
Patent number
US05130318

Reaction notes

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