Hydrochloric Acid → 4,4-Dimethyl-2-(4'hydroxymethylbiphenyl-2-yl)oxazoline

HRID 743749ノート

反応式

HRID 743749 の反応式
[CH3:1][C:2]1([CH3:24])[CH2:6][O:5][C:4]([C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=2[C:13]2[CH:18]=[CH:17][C:16]([CH2:19][O:20]COC)=[CH:15][CH:14]=2)=[N:3]1.Cl.C(=O)([O-])O.[Na+]>CO>[CH3:1][C:2]1([CH3:24])[CH2:6][O:5][C:4]([C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=2[C:13]2[CH:14]=[CH:15][C:16]([CH2:19][OH:20])=[CH:17][CH:18]=2)=[N:3]1

参加物

5

反応物 3

HCID 313Hydrochloric AcidHCID 516892Sodium BicarbonateHCID 118343424,4-Dimethyl-2-(4'-methoxymethoxymethylbiphenyl-2-yl)oxazoline

生成物 1

HCID 110658764,4-Dimethyl-2-(4'hydroxymethylbiphenyl-2-yl)oxazoline収率 97.1%

試薬・触媒・溶媒 1

HCID 887Methanol溶媒

反応条件

温度
40 °C

実験手順

2.62 g (8.05 mmol) of 4,4-dimethyl-2-(4'-methoxymethoxymethylbiphenyl-2-yl)oxazoline was dissolved in methanol (20 ml). 6N hydrochloric acid (10 ml) was added thereto, followed by stirring at 40° C. for 2 hours. The reaction liquid was poured into a saturated aqueous solution of sodium hydrogen-carbonate, followed by the extraction with chloroform. After washing with water and drying, vacuum concentration was conducted. The residue was purified by silica gel column chromatography (a n-hexane/ethyl acetate system) to give 2.20 g of the title compound as a crystal (yield 97%). m.p.; 97°-100° C.

後処理

  1. customThe reaction liquid
  2. extractionfollowed by the extraction with chloroform
  3. washAfter washing with water
  4. customdrying
  5. concentrationvacuum concentration
  6. customThe residue was purified by silica gel column chromatography (a n-hexane/ethyl acetate system)

出典と根拠

ORDレコード
ord-16031ffac8634bab96d9252f7573d9cd
出典データセット
uspto-grants-1996_09
特許番号
US05557002

反応ノート

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