Acetic Anhydride → N-[4-(4-Piperidinomethyl-2-pyridyloxy)-cis-2-butenyl]-2-(2-acetoxyethylthio)acetamide

HRID 52048

反応式

HRID 52048 の反応式
[N:1]1([CH2:7][C:8]2[CH:13]=[CH:12][N:11]=[C:10]([O:14][CH2:15]/[CH:16]=[CH:17]\[CH2:18][NH:19][C:20](=[O:26])[CH2:21][S:22][CH2:23][CH2:24][OH:25])[CH:9]=2)[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[C:27](OC(=O)C)(=[O:29])[CH3:28].C(=O)([O-])O.[Na+]>N1C=CC=CC=1>[N:1]1([CH2:7][C:8]2[CH:13]=[CH:12][N:11]=[C:10]([O:14][CH2:15]/[CH:16]=[CH:17]\[CH2:18][NH:19][C:20](=[O:26])[CH2:21][S:22][CH2:23][CH2:24][O:25][C:27](=[O:29])[CH3:28])[CH:9]=2)[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1

参加物

5

反応条件

温度
60 °C

実験手順

0.50 g of N-[4-(4-piperidinomethyl-2-pyridyloxy) -cis-2-butenyl]-2-(2-hydroxyethylthio)acetamide (prepared as described in Example 1) was added to a mixture of 0.47 ml of acetic anhydride and 0.39 g of pyridine, and the resulting mixture was heated at 60° C. for 2 hours. At the end of this time, the reaction mixture was poured into ice-water, after which a saturated aqueous solution of sodium hydrogencarbonate was added. The aqueous mixture was then extracted with chloroform. The extract was concentrated by evaporation under reduced pressure, and the residue was purified by column chromatography through silica gel, using a 1:19 by volume mixture of methanol and methylene chloride as the eluent, to give 0.51 g (yield 91%) of the title compound as an oil.

後処理

  1. extractionThe aqueous mixture was then extracted with chloroform
  2. concentrationThe extract was concentrated by evaporation under reduced pressure
  3. customthe residue was purified by column chromatography through silica gel
  4. additionby volume mixture of methanol and methylene chloride as the eluent

出典と根拠

ORDレコード
ord-8a7136316b4a432ba23aeaecd9ca971c
出典データセット
uspto-grants-1997_04
特許番号
US05616579

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