4-Hydroxybenzaldehyde → 4-[5-(3-Methyl-5-isoxazolyl)pentyloxy]benzaldehyde

HRID 359839Notes

Reaction equation

HRID 359839 reaction equation
[OH:1][C:2]1[CH:9]=[CH:8][C:5]([CH:6]=[O:7])=[CH:4][CH:3]=1.Br[CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][C:16]1[O:20][N:19]=[C:18]([CH3:21])[CH:17]=1.[OH-].[K+]>C(#N)C>[CH3:21][C:18]1[CH:17]=[C:16]([CH2:15][CH2:14][CH2:13][CH2:12][CH2:11][O:1][C:2]2[CH:9]=[CH:8][C:5]([CH:6]=[O:7])=[CH:4][CH:3]=2)[O:20][N:19]=1

Participants

5

Reactant 3

HCID 1264-HydroxybenzaldehydeHCID 14797Potassium HydroxideHCID 135440465-(5-Bromopentyl)-3-methylisoxazole

Product 1

HCID 64834254-[5-(3-Methyl-5-isoxazolyl)pentyloxy]benzaldehydeYield 67%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A solution of 7.2 g of 4-hydroxybenzaldehyde, 14.6 g of 5-(5-bromopentyl)-3-methylisoxazole, 4 g of potassium hydroxide in 100 ml of acetonitrile was heated at reflux for 1.5 hours. The reaction mixture was cooled and filtered, the solvent removed, and the residue recrystallized from isopropyl acetate-hexane to give 10.8 g of 4-[5-(3-methyl-5-isoxazolyl)pentyloxy]benzaldehyde as a pale yellow powder.

Workup

  1. temperatureat reflux for 1.5 hours
  2. temperatureThe reaction mixture was cooled
  3. filtrationfiltered
  4. customthe solvent removed
  5. customthe residue recrystallized from isopropyl acetate-hexane

Sources & evidence

ORD record
ord-fff2021f5b2c4eecbcae9edcc550357a
Source dataset
uspto-grants-1991_03
Patent number
US05002960

Reaction notes

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