Potassium Carbonate → HCID 68005405、化合物

HRID 1502944ノート

反応式

HRID 1502944 の反応式
[Cl:1][C:2]1[CH:12]=[C:11](Br)[CH:10]=[CH:9][C:3]=1[C:4]([O:6][CH2:7][CH3:8])=[O:5].[CH:14]([B-](F)(F)F)=[CH2:15].[K+].C(=O)([O-])[O-].[K+].[K+]>CS(C)=O.O>[Cl:1][C:2]1[CH:12]=[C:11]([CH:14]=[CH2:15])[CH:10]=[CH:9][C:3]=1[C:4]([O:6][CH2:7][CH3:8])=[O:5]

参加物

6

反応物 3

HCID 11430Potassium CarbonateHCID 22032236Ethyl 4-bromo-2-chlorobenzoateHCID 23679353Potassium vinyltrifluoroborate

生成物 1

HCID 68005405HCID 68005405、化合物収率 69%

試薬・触媒・溶媒 2

HCID 679Dimethyl Sulfoxide溶媒HCID 962Water溶媒

反応条件

温度
80 °C

実験手順

To a stirred solution of ethyl 2-chloro-4-bromobenzoate (2 g, 7.63 mmol) in dimethylsulfoxide (20 mL) was added potassium vinyltrifluoroborate (3.06 g, 22.9 mmol) and potassium carbonate (3.16 g, 22.9 mmol). The reaction mixture was degassed with argon for 30 min Bistriphenylphosphine(diphenylphosphinoferrocene)palladium dichloride (0.27 g, 0.38 mmol) was added and the reaction mixture was heated to 80° C. for 1 h. The reaction mixture was diluted with water (100 mL), extracted with ethyl acetate (2×50 mL), washed with brine, dried over Na2SO4 and concentrated under reduced pressure to obtain the compound as brown gummy material (1.1 g, 69%): 1H NMR (400 MHz, CDCl3) δ 7.81 (d, J=8.4 Hz, 1H), 7.46 (s, 1H), 7.33 (d, J=8.4 Hz, 1H), 6.70 (dd, J=17.6, 11.2 Hz, 1H), 5.87 (d, J=17.6 Hz, 1H), 5.42 (d, J=10.8 Hz, 1H), 4.41 (q, J=7.2 Hz, 2H), 1.43 (t, J=7.2 Hz, 3H); ESIMS m/z 211.22 ([M+H]+); IR (thin film) 1729, 886 cm−1.

後処理

  1. additionwas added
  2. extractionextracted with ethyl acetate (2×50 mL)
  3. washwashed with brine
  4. dry with materialdried over Na2SO4
  5. concentrationconcentrated under reduced pressure

出典と根拠

ORDレコード
ord-80711520865a45989233d3b8947dfc7e
出典データセット
uspto-grants-2015_12
特許番号
US09211281B2

反応ノート

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