Diethyl (cyanomethyl)phosphonate → 3-(3,4-Diethylphenyl)-3-phenylacrylonitrile

HRID 583472

反応式

HRID 583472 の反応式
COC1C=C(C(C2C=CC(OC)=C(OC)C=2)=CC(OC)=O)C=CC=1OC.[CH2:27]([C:29]1[CH:30]=[C:31]([CH:40]=[CH:41][C:42]=1[CH2:43][CH3:44])[C:32]([C:34]1[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=1)=O)[CH3:28].C(OP([CH2:53][C:54]#[N:55])(=O)OCC)C.C[Si](C)(C)[N-][Si](C)(C)C.[Li+]>CCCCCC>[CH2:27]([C:29]1[CH:30]=[C:31]([C:32]([C:34]2[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=2)=[CH:53][C:54]#[N:55])[CH:40]=[CH:41][C:42]=1[CH2:43][CH3:44])[CH3:28]

参加物

6

反応物 4

HCID 75676Diethyl (cyanomethyl)phosphonateHCID 2733832Lithium HexamethyldisilazideHCID 9820154Methyl 3,3-bis-(3,4-dimethoxyphenyl)acrylateHCID 215845983,4-Diethylbenzophenone

生成物 1

HCID 543068803-(3,4-Diethylphenyl)-3-phenylacrylonitrile

試薬・触媒・溶媒 1

HCID 8058Hexane溶媒

実験手順

3-(3,4-Diethylphenyl)-3-phenylacrylonitrile was prepared analogously to methyl 3,3-bis-(3,4-dimethoxyphenyl)acrylate using 3,4-diethylbenzophenone (0.95 g, 4 mmol), diethylcyanomethylphosphonate (0.73 mL, 4.4 mmol) and lithium hexamethyldisilazide (3.4 mL, 4.4 mmol, 1.3M) with a reaction time of 2 hours at room temperature. The crude product was purified by flash chromatography (silica gel, 8% ethyl acetate/methylene chloride) to afford an oil which was stirred in hexane until it solidified. The resulting slurry was filtered, the solid washed with hexane, air dried and then dried in vacuo to afford 0.6 g (57%) of a mixture of the E and Z isomers as a white solid: mp 63-64° C.; 1H NMR (CDCl3) δ 7.51-6.99 (m, 16H), 5.72 (s, 2H), 2.76-2.55 (m, 8H), 1.32-1.14 (m, 12H); 13C NMR (CDCl3) δ 163.3, 144.7, 142.2, 137.3, 136.5, 130.2, 129.8, 129.6, 128.6, 128.5, 128.4, 128.3, 127.2, 126.2, 118.2, 93.9, 93.7, 25.5, 25.3, 15.2, 15.0.

後処理

  1. customwith a reaction time of 2 hours
  2. customat room temperature
  3. customThe crude product was purified by flash chromatography (silica gel, 8% ethyl acetate/methylene chloride)
  4. customto afford an oil which
  5. filtrationThe resulting slurry was filtered
  6. washthe solid washed with hexane, air
  7. customdried
  8. customdried in vacuo

出典と根拠

ORDレコード
ord-43f248225c464e94bb41b7cab25611fa
出典データセット
uspto-grants-1999_07
特許番号
US05929117

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