4-Hydroxybenzaldehyde → 4-(16-Hydroxy-hexadecyloxy)-benzaldehyde

HRID 987343

Reaction equation

HRID 987343 reaction equation
[OH:1][C:2]1[CH:9]=[CH:8][C:5]([CH:6]=[O:7])=[CH:4][CH:3]=1.[OH:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26]O.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.CC(OC(/N=N/C(OC(C)C)=O)=O)C>O1CCCC1>[OH:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][O:1][C:2]1[CH:9]=[CH:8][C:5]([CH:6]=[O:7])=[CH:4][CH:3]=1

Participants

6

Reactant 4

HCID 1264-HydroxybenzaldehydeHCID 11776TriphenylphosphineHCID 821841,16-HexadecanediolHCID 5363146Diisopropyl azodicarboxylate

Product 1

HCID 229875534-(16-Hydroxy-hexadecyloxy)-benzaldehyde

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

To a stirred solution of 4-hydroxy-benzaldehyde (0.24 g, 2mmol) and 1,16-dihydroxyhexadecane (0.51 g, 2 mmol), triphenylphosphine (0.53 g, 2 mmol) in dry THF (20 ml) at −15° C. under an argon atmosphere was added a solution of diisopropylazodicarboxylate (0.4 g, 2 mmol) in dry THF (7.5 ml) over a period of 40 minutes. The mixture was allowed to warm to room temperature overnight. The solvent was removed under reduced pressure, diethyl ether was added and the white solid formed was removed by filtration. The filtrate was evaporated to dryness and the residue purified by chromatography on a column of silica gel which was, eluted with petroleum ether (b.p. 40-60° C.):tetrahydrofuran (THF) (10:1 by volume) to yield the title compound which was used directly without further purification.

Workup

  1. customThe solvent was removed under reduced pressure, diethyl ether
  2. additionwas added
  3. customthe white solid formed
  4. customwas removed by filtration
  5. customThe filtrate was evaporated to dryness
  6. customthe residue purified by chromatography on a column of silica gel which
  7. washeluted with petroleum ether (b.p. 40-60° C.)

Sources & evidence

ORD record
ord-322935217942452cae26b1a4d8ddfafd
Source dataset
uspto-grants-2003_10
Patent number
US06630128B1

Linked notes

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