Oxalic Acid → 5-Methoxy-6-(1-phenylethyl)-1,3-benzodioxole

HRID 2198437ノート

反応式

HRID 2198437 の反応式
[CH2:1]1[O:5][C:4]2[CH:6]=[C:7]([OH:10])[CH:8]=[CH:9][C:3]=2[O:2]1.[C:11]1([CH:17](O)[CH3:18])[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1.[C:20](O)(=O)C(O)=O>C(O)(=O)C.O>[CH3:18][CH:17]([C:8]1[C:7]([O:10][CH3:20])=[CH:6][C:4]2[O:5][CH2:1][O:2][C:3]=2[CH:9]=1)[C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1.[CH3:18][CH:17]([C:8]1[C:7]([OH:10])=[CH:6][C:4]2[O:5][CH2:1][O:2][C:3]=2[CH:9]=1)[C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1

参加物

7

反応物 3

HCID 971Oxalic AcidHCID 74091-PhenylethanolHCID 68289Sesamol

生成物 2

HCID 3363375-Methoxy-6-(1-phenylethyl)-1,3-benzodioxoleHCID 13035012(alpha-Methylbenzyl)-3,4-methylenedioxy-6-hydroxybenzene

試薬・触媒・溶媒 2

HCID 176Acetic Acid溶媒HCID 962Water溶媒2 回

実験手順

(α-Methylbenzyl)-3,4-methylenedioxy-6-methoxybenzene was prepared as follows: A solution of sesamol (41.4 g), 1-phenylethyl alcohol (36.6 g) and oxalic acid (2 g) in acetic acid (100 ml) and water (10 ml) was refluxed for 24 hours and diluted with water. Distillation of the oily product gave a pale yellow oil, b.p. 204°-205° at 4.0 mm Hg (56 g) which crystallized. Recrystallization from benzene-skelly solve F gave (α-methylbenzyl)-3,4-methylenedioxy-6-hydroxybenzene as colorless needles, m.p. 101°-102° (Found: C, 74.2, H, 5.75. Calc. for C15H14O3 : C, 74.4; H, 5.83%); pmr spectrum: δ1.57, 3H, D (J=7 Hz); δ4.29, 1H, Q (J=7 Hz); δ4.50, 1H, S; δ5.86, 2H, S; δ6.35, 1H, S; δ6.72, 1H, S; δ7.25, 5H, S.

後処理

  1. distillationDistillation of the oily product
  2. customgave a pale yellow oil, b.p. 204°-205° at 4.0 mm Hg (56 g) which
  3. customcrystallized
  4. customRecrystallization from benzene-skelly solve F

出典と根拠

ORDレコード
ord-310097966cae4f64b0bcc50e0923bd49
出典データセット
uspto-grants-1982_11
特許番号
US04357344

反応ノート

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