1-Dodecyne → 5-(Dodec-1-YN-1-YL)-2-hydroxybenzene-1,3-dicarbaldehyde

HRID 1640033Notes

Reaction equation

HRID 1640033 reaction equation
[CH:1]([C:3]1[CH:8]=[C:7](Br)[CH:6]=[C:5]([CH:10]=[O:11])[C:4]=1[OH:12])=[O:2].[CH:13]#[C:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH3:24]>C(#N)C.[Cu]I.C1(C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)[Pd][P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[CH:1]([C:3]1[CH:8]=[C:7]([C:13]#[C:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH3:24])[CH:6]=[C:5]([CH:10]=[O:11])[C:4]=1[OH:12])=[O:2]

Participants

6

Reactant 2

HCID 698211-DodecyneHCID 52602065-Bromo-2-hydroxybenzene-1,3-dicarbaldehyde

Product 1

HCID 597108655-(Dodec-1-YN-1-YL)-2-hydroxybenzene-1,3-dicarbaldehydeYield 46%

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178419050HCID 178419050, compoundCatalystHCID 6342AcetonitrileSolvent

Conditions

Temperature
80 °C

Procedure

2,6-Diformyl-4-bromophenol (2.50 g, 10.9 mmol), 1-dodecyne (2.00 g, 12.0 mmol), CuI (65 mg, 0.33 mmol), and bis(triphenylphosphine)palladium)II) dichloride were suspended in degassed acetonitrile (MeCN) (5 mL) and degassed benzene (1 mL). The yellow suspension was sparged with argon for 30 min and degassed Et3N (1 mL) was added. The resulting brown suspension was sealed in a pressure vial, warmed to 80° C. and held there for 12 h. The mixture was then partitioned between EtOAc and KHSO4 solution. The organic layer was separated, washed with brine, dried (MgSO4) and concentrated under reduced pressure. The dark yellow oil was purified by column chromatography on silica gel (25% Et2O in hexanes) to give 1.56 g (46%) of the title compound.

Workup

  1. customdegassed benzene (1 mL)
  2. customThe yellow suspension was sparged with argon for 30 min
  3. customdegassed Et3N (1 mL)
  4. additionwas added
  5. customThe resulting brown suspension was sealed in a pressure vial
  6. customThe mixture was then partitioned between EtOAc and KHSO4 solution
  7. customThe organic layer was separated
  8. washwashed with brine
  9. dry with materialdried (MgSO4)
  10. concentrationconcentrated under reduced pressure
  11. customThe dark yellow oil was purified by column chromatography on silica gel (25% Et2O in hexanes)

Sources & evidence

ORD record
ord-7982db0517cf4697a72ae53d5b48144c
Source dataset
uspto-grants-2012_02
Patent number
US08110679B2

Reaction notes

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