Pyridine → 16-Hexadecanoyloxyhexadecanoic acid

HRID 580757ノート

反応式

HRID 580757 の反応式
[OH: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][CH2:16][C:17]([OH:19])=[O:18].N1C=CC=CC=1.[C:26](Cl)(=[O:42])[CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][CH2:38][CH2:39][CH2:40][CH3:41]>O1CCCC1>[C:26]([O: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][CH2:16][C:17]([OH:19])=[O:18])(=[O:42])[CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][CH2:38][CH2:39][CH2:40][CH3:41]

参加物

5

反応物 3

HCID 1049PyridineHCID 8206Palmitoyl chlorideHCID 1046616-Hydroxyhexadecanoic acid

生成物 1

HCID 1960674616-Hexadecanoyloxyhexadecanoic acid収率 83%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

実験手順

16-Hydroxyhexadecanoic acid (5.43 g, 19.9 mmol) was dissolved in tetrahydrofuran (190 ml) and pyridine (2.36 g, 29.9 mmol) was added. Palmitoyl chloride (5.48 g, 19.9 mmol) was dissolved in tetrahydrofuran (10 ml) and added dropwise at room temperature. After stirring at room temperature for 16 hours, the mixture was filtered and the filtrate evaporated under reduced pressure. The residue was dissolved in chloroform, washed with water (3×50 ml), and the organc phase was dried (MgSO4). After evaporating under reduced pressure, the residue was purified on a silica column, eluted with chloroform with increasing methanol concentration (from 1% to 2% methanol in chloroform) to give 8.41 g (83%) of the title compound. 1H NMR (300 MHz, CDCl3): δ 0.85 (t, 3H, CH3), 1.20-1.35 (s, 46H, --CH2 --), 1.55-1.70 (m, 6H, --CH2 --), 2.25 (t, 2H, --CH2 --C(O)--O), 2.45 (t, 2H, --CH2 --COOH), 4.05 (t, 2H, --O--CH2). 13C NMR (75 MHz, CDCl3): δ 14.01, 22.57, 24.10, 24.91, 25.82, 28.53, 28.75, 28.94, 29.08, 29.15, 29.25, 29.36, 29.54, 31.81, 34.29, 35.16, 64.27, 76.48, 76.90, 77.10, 77.32, 169.50, 173.91.

後処理

  1. additionadded dropwise at room temperature
  2. filtrationthe mixture was filtered
  3. customthe filtrate evaporated under reduced pressure
  4. dissolutionThe residue was dissolved in chloroform
  5. washwashed with water (3×50 ml)
  6. dry with materialthe organc phase was dried (MgSO4)
  7. customAfter evaporating under reduced pressure
  8. customthe residue was purified on a silica column
  9. washeluted with chloroform with increasing methanol concentration (from 1% to 2% methanol in chloroform)

出典と根拠

ORDレコード
ord-67cad28906d44ee2aa41068271cc8fbd
出典データセット
uspto-grants-1999_07
特許番号
US05919434

反応ノート

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