Water → 4-(2,2-Diethoxyethoxy)benzonitrile

HRID 2219192ノート

反応式

HRID 2219192 の反応式
C(=O)([O-])[O-].[K+].[K+].[C:7]([C:9]1[CH:14]=[CH:13][C:12]([OH:15])=[CH:11][CH:10]=1)#[N:8].[CH2:16]([O:18][CH:19]([O:22][CH2:23][CH3:24])[CH2:20]Br)[CH3:17].O>CN(C=O)C.CCOC(C)=O>[CH2:16]([O:18][CH:19]([O:22][CH2:23][CH3:24])[CH2:20][O:15][C:12]1[CH:13]=[CH:14][C:9]([C:7]#[N:8])=[CH:10][CH:11]=1)[CH3:17]

参加物

7

反応物 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 130194-CyanophenolHCID 74852Ethane, 2-bromo-1,1-diethoxy-

生成物 1

HCID 177499644-(2,2-Diethoxyethoxy)benzonitrile収率 71%

試薬・触媒・溶媒 2

HCID 6228Dimethylformamide溶媒HCID 8857Ethyl Acetate溶媒

実験手順

Powdered potassium carbonate (5.18 g, 37.7 mmol) is added to a stirred solution of 4-cyanophenol (2.00 g, 16.8 mmol) and bromoacetaldehyde diethyl acetal (4.53 mL, 30.3 mmol) in anhydrous DMF (20 mL). The resultant mixture is stirred at 85° C. under nitrogen for 3 days. The mixture is cooled to ambient temperature; then water (100 mL) and EtOAc (100 mL) are added to the mixture. The organic layer is separated, dried over MgSO4, filtered and concentrated. The oil is chromatographed on silica (gradient 5-20% EtOAc in hexane) to give 2.80 g (11.9 mmol, 71% yield) of the title compound. 1H NMR (CDCl3): δ1.24 (t, J=7.1 Hz, 6H), 3.60-3.68 (m, 2H), 3.73-3.81 (m, 2H), 4.04 (d, J=5.2 Hz, 2H), 4.83 (t, J=5.2 Hz, 1H), 6.97 (br d, J=9.2 Hz, 2H), 7.58 (br d, J=9.2 Hz, 2H); Analysis for C13H17NO3: calcd: C, 66.36; H, 7.28; N, 5.95; found: C, 66.41; H, 7.34; N, 6.01.

後処理

  1. customThe organic layer is separated
  2. dry with materialdried over MgSO4
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe oil is chromatographed on silica (gradient 5-20% EtOAc in hexane)

出典と根拠

ORDレコード
ord-9239dcce5db6453e891a05eb09984c25
出典データセット
uspto-grants-2008_08
特許番号
US07414063B2

反応ノート

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