1,3-Propanediol → 3-[5-Methyl-3-(2-trifluoromethylphenylsulfonyloxy)phenoxy]propanol

HRID 442895Notes

Reaction equation

HRID 442895 reaction equation
[CH3:1][C:2]1[CH:3]=[C:4]([O:9][S:10]([C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][C:14]=2[C:19]([F:22])([F:21])[F:20])(=[O:12])=[O:11])[CH:5]=[C:6]([OH:8])[CH:7]=1.C(P(CCCC)CCCC)CCC.[CH2:36](O)[CH2:37][CH2:38][OH:39].N(C(N1CCCCC1)=O)=NC(N1CCCCC1)=O>O1CCCC1.CCCCCC>[CH3:1][C:2]1[CH:3]=[C:4]([O:9][S:10]([C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][C:14]=2[C:19]([F:22])([F:20])[F:21])(=[O:12])=[O:11])[CH:5]=[C:6]([CH:7]=1)[O:8][CH2:36][CH2:37][CH2:38][OH:39]

Participants

7

Reactant 4

HCID 104421,3-PropanediolHCID 13831TributylphosphineHCID 730421,1'-(Azodicarbonyl)dipiperidineHCID 227226495-Methyl-3-(2-trifluoromethylphenylsulfonyloxy)phenol

Product 1

HCID 227224973-[5-Methyl-3-(2-trifluoromethylphenylsulfonyloxy)phenoxy]propanolYield 95.4%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8058HexaneSolvent

Procedure

To a solution of 5-methyl-3-(2-trifluoromethylphenylsulfonyloxy)phenol (665 mg, 2.0 mmol), as prepared in the preceding step, tri-n-butylphosphine (607 mg, 3.0 mmol), and 1,3-propanediol (760 mg, 10 mmol) in anhydrous tetrahydrofuran (20 mL) was added 1,1'-(azodicarbonyl)dipiperidine (757 mg, 3.0 mmol). The mixture was stirred at room temperature overnight. Hexane (30 mL) was added to the mixture, and the precipitates were removed by filtration. The filtrate was evaporated in vacuo, and the residue was purified by flash column chromatography (2:1 hexane/ethyl acetate) to give the title compound as a colorless oil (745 mg, 94%). 1H-NMR (300 MHz, CDCl3) δ 8.13 (d, J=7.2 Hz, 1 H), 7.99 (d, J=7.2 Hz, 1 H), 7.80 (t, J=7.6 Hz, 1 H), 7.70 (t, J=7.3 Hz, 1 H), 6.63 (s, 1 H), 6.48 (s, 1 H), 6.46 (s, 1 H), 4.02 (t, J=6.0 Hz, 2 H), 3.81 (m, 2 H), 2.25 (s, 3 H), 1.99 (m, 2 H), 1.61 (s, 1 H).

Workup

  1. customthe precipitates were removed by filtration
  2. customThe filtrate was evaporated in vacuo
  3. customthe residue was purified by flash column chromatography (2:1 hexane/ethyl acetate)

Sources & evidence

ORD record
ord-0bdfce39e4234cb984828eded1938b34
Source dataset
uspto-grants-1999_04
Patent number
US05891909

Reaction notes

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