Cesium fluoride → methyl 2(S)-ethoxy-3-{4-[6-(3-heptyl-1-methylureido)pyrid-2-yl]phenyl}propanoate

HRID 2426317ノート

反応式

HRID 2426317 の反応式
Br[C:2]1[N:7]=[C:6]([N:8]([CH3:19])[C:9]([NH:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH3:18])=[O:10])[CH:5]=[CH:4][CH:3]=1.[CH2:20]([O:22][C@@H:23]([CH2:28][C:29]1[CH:34]=[CH:33][C:32](B2OC(C)(C)C(C)(C)O2)=[CH:31][CH:30]=1)[C:24]([O:26][CH3:27])=[O:25])[CH3:21].[F-].[Cs+]>COC(O)C(O)OC>[CH2:20]([O:22][C@@H:23]([CH2:28][C:29]1[CH:34]=[CH:33][C:32]([C:2]2[CH:3]=[CH:4][CH:5]=[C:6]([N:8]([CH3:19])[C:9]([NH:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH3:18])=[O:10])[N:7]=2)=[CH:31][CH:30]=1)[C:24]([O:26][CH3:27])=[O:25])[CH3:21]

参加物

5

反応物 3

HCID 25953Cesium fluorideHCID 67147872methyl 2(S)-ethoxy-3-[4-(4,4,5,5-tetramethyl[1,3,2]dioxaborolan-2-yl)phenyl]propanoateHCID 860188681-(6-Bromopyrid-2-yl)-1-methyl-3-heptylurea

生成物 1

HCID 67148298methyl 2(S)-ethoxy-3-{4-[6-(3-heptyl-1-methylureido)pyrid-2-yl]phenyl}propanoate収率 45.3%

試薬・触媒・溶媒 1

HCID 21263609Dimethoxy ethylene glycol溶媒

反応条件

温度
80 °C

実験手順

3.2 g (9.7 mmol) of 1-(6-bromopyrid-2-yl)-3-heptyl-1-methylurea, 4.2 g (12.6 mmol) of methyl 2(S)-ethoxy-3-[4-(4,4,5,5-tetramethyl[1,3,2]dioxaborolan-2-yl)phenyl]propanoate (prepared as in Example 7e) and 4.4 g (29.1 mmol) of caesium fluoride are placed in 200 ml of dimethoxyethylene glycol. The reaction medium is degassed, 0.23 g (0.3 mmol) of dichlorodiphenylphosphinoferrocenepalladium is then added and the reaction medium is stirred at 80° C. for 18 hours. After addition of water, the reaction medium is extracted with ethyl acetate. The organic phase is washed with water, with saturated sodium chloride solution, dried over magnesium sulfate, filtered and evaporated. The residue obtained is purified by thin-layer chromatography on silica eluted with an 80/20 heptane/ethyl acetate mixture. 2 g (45%) of methyl 2(S)-ethoxy-3-{4-[6-(3-heptyl-1-methylureido)pyrid-2-yl]phenyl}propanoate are obtained.

後処理

  1. customThe reaction medium is degassed
  2. addition0.23 g (0.3 mmol) of dichlorodiphenylphosphinoferrocenepalladium is then added
  3. additionAfter addition of water
  4. extractionthe reaction medium is extracted with ethyl acetate
  5. washThe organic phase is washed with water, with saturated sodium chloride solution
  6. dry with materialdried over magnesium sulfate
  7. filtrationfiltered
  8. customevaporated
  9. customThe residue obtained
  10. customis purified by thin-layer chromatography on silica
  11. washeluted with an 80/20 heptane/ethyl acetate mixture

出典と根拠

ORDレコード
ord-546962a0e8a848458b11c0e6cfcb7eb3
出典データセット
uspto-grants-2011_06
特許番号
US07968560B2

反応ノート

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