Ethanolamine → N-(2-Hydroxyethyl)-6-(4-oxo-4H-1,3-benzothiazin-2-yl)-2-pyridinecarboxamide

HRID 748282ノート

反応式

HRID 748282 の反応式
[O:1]=[C:2]1[C:7]2[CH:8]=[CH:9][CH:10]=[CH:11][C:6]=2[S:5][C:4]([C:12]2[N:17]=[C:16]([C:18]([OH:20])=O)[CH:15]=[CH:14][CH:13]=2)=[N:3]1.[NH2:21][CH2:22][CH2:23][OH:24].CCN=C=NCCCN(C)C.C1C=CC2N(O)N=NC=2C=1>CN(C=O)C.O.C(OCC)(=O)C>[OH:24][CH2:23][CH2:22][NH:21][C:18]([C:16]1[CH:15]=[CH:14][CH:13]=[C:12]([C:4]2[S:5][C:6]3[CH:11]=[CH:10][CH:9]=[CH:8][C:7]=3[C:2](=[O:1])[N:3]=2)[N:17]=1)=[O:20]

参加物

8

反応物 4

HCID 700EthanolamineHCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 229393396-(4-Oxo-4H-1,3-benzothiazin-2-yl)-2-pyridinecarboxylic acid

生成物 1

HCID 59750484N-(2-Hydroxyethyl)-6-(4-oxo-4H-1,3-benzothiazin-2-yl)-2-pyridinecarboxamide収率 10.5%

試薬・触媒・溶媒 3

HCID 962Water溶媒HCID 6228Dimethylformamide溶媒HCID 8857Ethyl Acetate溶媒

反応条件

温度
80 °C

実験手順

6-(4-Oxo-4H-1,3-benzothiazin-2-yl)-2-pyridinecarboxylic acid (1.00 g, 3.5 mmol) was dissolved in DMF (20 ml). 2-Aminoethanol (0.51 g, 8.3 mmol), WSC (1.34 g, 7.0 mmol) and HOBt (0.95 g, 7.0 mmol) were added thereto, and the mixture was stirred at 80° C. for 6 hrs. The reaction mixture was combined with ethyl acetate and water. The organic layer was washed with saturated brine and dried over anhydrous magnesium sulfate. The solvent was evaporated, and the residue was subjected to a silica gel column chromatography. The fractions eluted with ethyl acetate-methanol (4:1, v/v) were collected, concentrated and recrystallized from diisopropyl ether-methanol to give the titled compound (0.12 g, 10%) as pale yellow crystals.

後処理

  1. washThe organic layer was washed with saturated brine
  2. dry with materialdried over anhydrous magnesium sulfate
  3. customThe solvent was evaporated
  4. washThe fractions eluted with ethyl acetate-methanol (4:1
  5. customv/v) were collected
  6. concentrationconcentrated
  7. customrecrystallized from diisopropyl ether-methanol

出典と根拠

ORDレコード
ord-dc00865b685541ef90e74f549e4ae174
出典データセット
uspto-grants-2008_07
特許番号
US07399759B2

反応ノート

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