4-Hydroxybenzaldehyde → HCID 88582986, compound

HRID 922328Notes

Reaction equation

HRID 922328 reaction equation
[CH3:1][O:2]/[N:3]=[C:4](/[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1)\[CH2:5][O:6][C:7]1[CH:12]=[CH:11][C:10]([CH2:13][OH:14])=[CH:9][CH:8]=1.O[C:22]1[CH:29]=[CH:28][C:25]([CH:26]=[O:27])=[CH:24][CH:23]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OC(C)C)=O)=NC(OC(C)C)=O>C1COCC1.O>[CH3:1][O:2]/[N:3]=[C:4](/[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1)\[CH2:5][O:6][C:7]1[CH:12]=[CH:11][C:10]([CH2:13][O:14][C:22]2[CH:29]=[CH:28][C:25]([CH:26]=[O:27])=[CH:24][CH:23]=2)=[CH:9][CH:8]=1

Participants

7

Reactant 4

HCID 1264-HydroxybenzaldehydeHCID 11776TriphenylphosphineHCID 75555Diisopropyl diazene-1,2-dicarboxylateHCID 86695770(4-{[(2E)-2-(methoxyimino)-2-phenylethyl]oxy}phenyl)methanol

Product 1

HCID 88582986HCID 88582986, compoundYield 36.2%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

To a stirring solution of (4-{[(2Z)-2-(methoxyimino)-2-phenylethyl]oxy}phenyl)methanol (10 g, 37 mmol) and 4-hydroxybenzaldehyde (4.5 g, 37 mmol) in THF (100 mL) was added triphenylphosphine (12.2 g, 46.5 mmol) and Diisopropyl azodicarboxylate (11.2 g, 55 mmol) at 0° C., then stirred at RT for 12 h. RM diluted with water and extracted with ethyl acetate. The organic layer was washed with brine solution, dried over Na2SO4 and concentrated to pale brown oil. Crude was purified by column (100-200 silica) using 8% ethyl acetate to get the titled compound as white solid (5 g, Yield: 36.2%). 1H NMR (300 MHz, CDCl3): δ 9.81 (s, 1H), 7.74-7.77 (d, 2H), 7.58-7.61 (m, 2H), 7.24-7.29 (m, 5H), 6.97-6.99 (d, 2H), 6.85-6.87 (d, 2H), 5.13 (s, 2H), 4.98 (s, 2H), 3.98 (s, 3H).

Workup

  1. extractionextracted with ethyl acetate
  2. washThe organic layer was washed with brine solution
  3. dry with materialdried over Na2SO4
  4. concentrationconcentrated to pale brown oil
  5. customCrude was purified by column (100-200 silica)

Sources & evidence

ORD record
ord-b0d1e037b686452d8285b548a6ebdbf5
Source dataset
uspto-grants-2016_03
Patent number
US09278915B2

Reaction notes

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