Pyridine → N-Acetyl-2-[4-(hexadecyloxy)phenoxy]-N-(2-pyridinylmethyl)acetamide

HRID 247998Notes

Reaction equation

[CH2:1]([O:17][C:18]1[CH:35]=[CH:34][C:21]([O:22][CH2:23][C:24]([NH:26][CH2:27][C:28]2[CH:33]=[CH:32][CH:31]=[CH:30][N:29]=2)=[O:25])=[CH:20][CH:19]=1)[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH3:16].[C:36](OC(=O)C)(=[O:38])[CH3:37].N1C=CC=CC=1>O>[C:36]([N:26]([CH2:27][C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][N:29]=1)[C:24](=[O:25])[CH2:23][O:22][C:21]1[CH:20]=[CH:19][C:18]([O:17][CH2:1][CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH3:16])=[CH:35][CH:34]=1)(=[O:38])[CH3:37]

Participants

Conditions

Temperature: 110 °C

Procedure

A mixture of 0.70 g of product from Example 88, 2.96 g of acetic anhydride, 0.027 g of 4-N,N-dimethylaminopyridine and 15 ml of pyridine is heated at 110° C. for 35 hours and at reflux temperature for 57 hours. The reaction is poured into water and extracted with methylene chloride. The organic layer is washed with saturated sodium chloride, dried and concentrated in vacuo. The residue is purified by column chromatography (silica gel: 35% ethyl acetate/hexane) to give 0.366 g of product as light yellow crystals.

Workup

temperatureat reflux temperature for 57 hours
extractionextracted with methylene chloride
washThe organic layer is washed with saturated sodium chloride
customdried
concentrationconcentrated in vacuo
customThe residue is purified by column chromatography (silica gel: 35% ethyl acetate/hexane)

Sources & evidence

ORD record: ord-45f12bc8f7f64e418b7813bec199d7ea
Source dataset: uspto-grants-1993_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05208247

Reaction notes

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