Methyl Acrylate → 3-Pyridin-4-YL-acrylic acid methyl ester

HRID 1769148

反応式

HRID 1769148 の反応式
Br[C:2]1[CH:7]=[CH:6][N:5]=[CH:4][CH:3]=1.[C:8]([O:12][CH3:13])(=[O:11])[CH:9]=[CH2:10]>C([O-])(=O)C.[Pd+2].C([O-])(=O)C.C(N(CC)CC)C.CC#N>[N:5]1[CH:6]=[CH:7][C:2]([CH:10]=[CH:9][C:8]([O:12][CH3:13])=[O:11])=[CH:3][CH:4]=1

参加物

6

反応物 2

HCID 7294Methyl AcrylateHCID 142684-Bromopyridine

生成物 1

HCID 981633-Pyridin-4-YL-acrylic acid methyl ester収率 93,152.5%

試薬・触媒・溶媒 3

HCID 8471Triethylamine触媒HCID 167845palladium(II) acetate触媒HCID 6342Acetonitrile溶媒

反応条件

温度
0 °C

実験手順

A mixture of 4-bromopyridine (40.6 g, 0.25 mmol), palladium acetate (1.16 g, 5.14 mmol), tri-(O-tolyl)phosphine (3.14 g, 10.3 mmol), CH3CN (129 mL), triethylamine (64.3 mL, 0.46 mmol) and methyl acrylate (46.8 mL, 0,514 mmol) was sealed in a bomb and placed in an oil bath at 120° C. for 4 hours. The mixture was cooled to 0° C., the bomb was vented, and the slurry thus obtained was partitioned between CH2Cl2 /water. The aqueous phase was separated, extracted with CH2Cl2 (2×200 mL) and the combined organic layers were dried over MgSO4. The solvent was removed in vacuo to afford 38 g of methyl 3-(4-pyridyl)propenoate.

後処理

  1. customwas sealed in a bomb
  2. customthe slurry thus obtained
  3. customwas partitioned between CH2Cl2 /water
  4. customThe aqueous phase was separated
  5. extractionextracted with CH2Cl2 (2×200 mL)
  6. dry with materialthe combined organic layers were dried over MgSO4
  7. customThe solvent was removed in vacuo

出典と根拠

ORDレコード
ord-c39ff30587674723a1fee0bd3c349348
出典データセット
uspto-grants-1995_01
特許番号
US05380721

関連ノート

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