4-Hydroxybenzaldehyde → 4-(1-Acetylpiperidin-4-yloxy)benzaldehyde

HRID 591710Notes

Reaction equation

HRID 591710 reaction equation
[OH:1][CH:2]1[CH2:7][CH2:6][N:5]([C:8](=[O:10])[CH3:9])[CH2:4][CH2:3]1.O[C:12]1[CH:19]=[CH:18][C:15]([CH:16]=[O:17])=[CH:14][CH:13]=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>[C:8]([N:5]1[CH2:6][CH2:7][CH:2]([O:1][C:12]2[CH:19]=[CH:18][C:15]([CH:16]=[O:17])=[CH:14][CH:13]=2)[CH2:3][CH2:4]1)(=[O:10])[CH3:9]

Participants

6

Reactant 4

HCID 1264-HydroxybenzaldehydeHCID 11776TriphenylphosphineHCID 75555Diisopropyl diazene-1,2-dicarboxylateHCID 107492911-(4-Hydroxypiperidin-1-yl)ethan-1-one

Product 1

HCID 230875244-(1-Acetylpiperidin-4-yloxy)benzaldehyde

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 1-(4-hydroxy-piperidin-1-yl)-ethanone (1.00 g, 6.90 mmol), 4-hydroxybenzaldehyde (0.854 g, 6.90 mmol) and triphenylphosphine (1.83 g, 6.90 mmol) in THF (10 mL) was added dropwise diisopropyl azodicarboxylate (DIAD) (1.41 g, 6.90 mmol). The reaction mixture was stirred at room temperature for 16 hours, THF was evaporated, and the residue was purified by column chromatography, using dichloromethane:ethyl acetate:methanol (1:2:0.05) as eluent, to give 4-(1-acetyl-piperidin-4-yloxy)-benzaldehyde. Yield: 0.40 g (23%).

Workup

  1. customTHF was evaporated
  2. customthe residue was purified by column chromatography

Sources & evidence

ORD record
ord-965e33a22ff849faace415dd0cc2be03
Source dataset
uspto-grants-2016_01
Patent number
US09238640B2

Reaction notes

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