Water → 4-[1-(3,4-Dimethoxyphenoxy)-4-hydroxybutyl]benzonitrile

HRID 857178Notes

Reaction equation

HRID 857178 reaction equation
B.CSC.[CH3:5][O:6][C:7]1[CH:8]=[C:9]([CH:23]=[CH:24][C:25]=1[O:26][CH3:27])[O:10][CH:11]([C:15]1[CH:22]=[CH:21][C:18]([C:19]#[N:20])=[CH:17][CH:16]=1)[CH2:12][CH:13]=[CH2:14].O.B1([O-])O[O:30]1.O.O.O.O.[Na+]>C1COCC1>[CH3:5][O:6][C:7]1[CH:8]=[C:9]([CH:23]=[CH:24][C:25]=1[O:26][CH3:27])[O:10][CH:11]([C:15]1[CH:22]=[CH:21][C:18]([C:19]#[N:20])=[CH:17][CH:16]=1)[CH2:12][CH2:13][CH2:14][OH:30]

Participants

6

Reactant 4

HCID 962Water2×HCID 12423031(Dimethyl sulfide)trihydroboronHCID 218676894-[1-(3,4-Dimethoxyphenoxy)-3-butenyl]benzonitrileHCID 23693097Sodium;3-oxidodioxaborirane;tetrahydrate

Product 1

HCID 218677264-[1-(3,4-Dimethoxyphenoxy)-4-hydroxybutyl]benzonitrileYield 78%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

Borane-methyl sulfide complex (2 M in ether, 11 mL, 22 mmol) was added dropwise to a cooled (−5° C.) solution of 4-[1-(3,4-dimethoxy-phenoxy)-3-butenyl]benzonitrile (from step (a) above; 17.6 g, 56.8 mmol) in dry THF (15 mL) over a period of 15 minutes (during which time the reaction temperature rose to 0° C.). The resulting mixture was stirred at between 0 and 10° C. for 1.5 h, before being allowed to warm to rt. Stirring was continued for a further 3.5 h at this temperature before water (22 mL) and sodium perborate tetrahydrate (11 g, 66 mmol) were added. The biphasic mixture was stirred for 2 h at rt before the water layer was separated and extracted with ether. The combined organic layers were washed with brine, dried and concentrated in vacuo. The resulting residue was purified by chromatography on silica gel, eluting with IPA:ethyl acetate:heptane (5:25:76) to yield 14.5 g (77%) of the sub-title compound.

Workup

  1. customrose to 0° C.
  2. stirringStirring
  3. additionwere added
  4. customwas separated
  5. extractionextracted with ether
  6. washThe combined organic layers were washed with brine
  7. customdried
  8. concentrationconcentrated in vacuo
  9. customThe resulting residue was purified by chromatography on silica gel
  10. washeluting with IPA:ethyl acetate:heptane (5:25:76)

Sources & evidence

ORD record
ord-f3baa0c99e484c268d4e0acaa82bf1ae
Source dataset
uspto-grants-2006_12
Patent number
US07144914B2

Reaction notes

Loading…