1-Methylimidazole → Ethyl 2-acetylamino-3-oxooctadecanoate

HRID 222822

反応式

HRID 222822 の反応式
[CH2:1]([O:3][C:4](=[O:10])[CH2:5][NH:6][C:7](=[O:9])[CH3:8])[CH3:2].CN1C=CN=C1.[C:17](Cl)(=[O:33])[CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH3:32].C(N(CC)CC)C>[Ti](Cl)(Cl)(Cl)Cl.O.C1(C)C=CC=CC=1>[C:7]([NH:6][CH:5]([C:17](=[O:33])[CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH3:32])[C:4]([O:3][CH2:1][CH3:2])=[O:10])(=[O:9])[CH3:8]

参加物

8

反応条件

温度
-20 °C

実験手順

A toluene solution (33.0 ml) of N-acetylglycine ethyl ester (1.00 g, 6.89 mmol) and N-methylimidazole (679 mg, 8.27 mmol) was cooled to −20° C., and palmitoyl chloride (1.89 g, 6.89 mmol) was added thereto in nitrogen atmosphere. After the mixture was stirred for 30 minutes at the same temperature, titanium tetrachloride (4.57 mg, 24.12 mmol) and triethylamine (2.79 g, 27.56 mmol) were added thereto. The resulting mixture was stirred for 2 hours at −20° C. Water (20 mL) was added thereto, and the mixture was heated to room temperature, and the organic layer was separated. It was confirmed by comparative analysis with sample product using HPLC that the organic layer contained 1.75 g of the title compound (yield: 66%).

後処理

  1. additionwere added
  2. temperaturethe mixture was heated to room temperature
  3. customthe organic layer was separated

出典と根拠

ORDレコード
ord-0a19c46d04e844ffb7ec9fc4f180016d
出典データセット
uspto-grants-2012_06
特許番号
US08207370B2

関連ノート

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