3-Hydroxybenzaldehyde → 3-Isopropoxybenzaldehyde

HRID 50504

反応式

HRID 50504 の反応式
[OH:1][C:2]1[CH:3]=[C:4]([CH:7]=[CH:8][CH:9]=1)[CH:5]=[O:6].I[CH:11]([CH3:13])[CH3:12].C(=O)([O-])[O-].[K+].[K+].O>C(O)(C)C>[CH:11]([O:1][C:2]1[CH:3]=[C:4]([CH:7]=[CH:8][CH:9]=1)[CH:5]=[O:6])([CH3:13])[CH3:12]

参加物

6

反応物 4

HCID 1013-HydroxybenzaldehydeHCID 962WaterHCID 6362Isopropyl iodideHCID 11430Potassium Carbonate

生成物 1

HCID 7129143-Isopropoxybenzaldehyde収率 67%

試薬・触媒・溶媒 1

HCID 3776Isopropanol溶媒

実験手順

EX-645A) 3-Hydroxybenzaldehyde (5.60 g, 45.9 mmol) and 2-iodopropane (7.86-46.2 mmol) were dissolved in 50 mL of isopropanol. Potassium carbonate (20 g, 145 mmol) was added, and the mixture was heated to reflux for 8 h, at which time TLC analysis indicated that the reaction had gone to completion. Water was added to dissolve all solids, and the mixture was extracted with ether (3×). The combined ether layer was washed with water, 2 M NaOH, again with water until clear (4×), and finally with brine. The solution was dried over MgSO4, filtered, and evaporated to give 5.03 g (67%) of the desired 3-isopropoxybenzaldehyde product as a pale oil. 1H NMR (C6D6) δ 9.62 (s, 1H), 7.29 (s, 1H), 7.03 (m, 1H), 6.91 (t, 1H), 6.84 (m, 1H), 4.03 (septet, 1H), 0.96 (d, 6H).

後処理

  1. temperaturethe mixture was heated
  2. temperatureto reflux for 8 h, at which time TLC analysis
  3. dissolutionto dissolve all solids
  4. extractionthe mixture was extracted with ether (3×)
  5. washThe combined ether layer was washed with water, 2 M NaOH, again with water until clear (4×)
  6. dry with materialThe solution was dried over MgSO4
  7. filtrationfiltered
  8. customevaporated

出典と根拠

ORDレコード
ord-a85c68cf0b574b6abfd943208da65d44
出典データセット
uspto-grants-2004_03
特許番号
US06710089B2

関連ノート

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