1,4-Dihydroxy-2,2,6,6-tetramethylpiperidine → 1-(Cyclooct-2-enyloxy)-2,2,6,6-tetramethyl-4-hydroxypiperidine

HRID 322802

反応式

HRID 322802 の反応式
[OH:1][N:2]1[C:7]([CH3:9])([CH3:8])[CH2:6][CH:5]([OH:10])[CH2:4][C:3]1([CH3:12])[CH3:11].[CH:13]1[CH2:20][CH2:19][CH2:18][CH2:17][CH2:16][CH2:15][CH:14]=1>>[CH:20]1([O:1][N:2]2[C:7]([CH3:8])([CH3:9])[CH2:6][CH:5]([OH:10])[CH2:4][C:3]2([CH3:12])[CH3:11])[CH2:19][CH2:18][CH2:17][CH2:16][CH2:15][CH:14]=[CH:13]1

参加物

3

反応物 2

HCID 53951,4-Dihydroxy-2,2,6,6-tetramethylpiperidineHCID 136091-Cyclooctene

生成物 1

HCID 699053051-(Cyclooct-2-enyloxy)-2,2,6,6-tetramethyl-4-hydroxypiperidine収率 36%

反応条件

温度
87.5 °C

実験手順

A mixture of 15.0 g (0.09 mol) of 1-oxyl-4-hydroxy-2,2,6,6-tetramethylpiperidine and 126.6 g (1.15 mol) of cyclooctene is heated under a nitrogen atmosphere at 87-88° C. for 40 hours. The reaction mixture is filtered to remove 1,4-dihydroxy-2,2,6,6-tetramethylpiperidine, and the filtrate is washed with 5% ascorbic acid (2×50 mL) and distilled water (2×50 mL). The organic phase is dried over anhydrous magnesium sulfate and the volatiles removed in vacuo. The residue is crystallized from heptane to give 4.40 g (36% yield) of the title compound as a white solid.

後処理

  1. filtrationThe reaction mixture is filtered
  2. customto remove 1,4-dihydroxy-2,2,6,6-tetramethylpiperidine
  3. washthe filtrate is washed with 5% ascorbic acid (2×50 mL)
  4. distillationdistilled water (2×50 mL)
  5. dry with materialThe organic phase is dried over anhydrous magnesium sulfate
  6. customthe volatiles removed in vacuo
  7. customThe residue is crystallized from heptane

出典と根拠

ORDレコード
ord-0ca62645de064477b93f5fe01b344fe4
出典データセット
uspto-grants-2001_04
特許番号
US06211378B1

関連ノート

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