Triethylamine → 10a-(4-methoxyphenyl)-8-[(trimethylsilyl)ethynyl]-2,3,10,10a-tetrahydro-1H,5H-imidazo[1,2-a]pyrrolo[1,2-d]pyrazin-5-one

HRID 1910944ノート

反応式

HRID 1910944 の反応式
Br[C:2]1[N:6]2[CH2:7][C:8]3([C:15]4[CH:20]=[CH:19][C:18]([O:21][CH3:22])=[CH:17][CH:16]=4)[NH:14][CH2:13][CH2:12][N:9]3[C:10](=[O:11])[C:5]2=[CH:4][CH:3]=1.C(N(CC)CC)C.[CH3:30][Si:31]([C:34]#[CH:35])([CH3:33])[CH3:32]>Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.[Cu]I>[CH3:22][O:21][C:18]1[CH:19]=[CH:20][C:15]([C:8]23[NH:14][CH2:13][CH2:12][N:9]2[C:10](=[O:11])[C:5]2[N:6]([C:2]([C:35]#[C:34][Si:31]([CH3:33])([CH3:32])[CH3:30])=[CH:3][CH:4]=2)[CH2:7]3)=[CH:16][CH:17]=1

参加物

6

反応物 3

HCID 8471TriethylamineHCID 66111TrimethylsilylacetyleneHCID 67369880HCID 67369880、化合物

生成物 1

HCID 6736846710a-(4-methoxyphenyl)-8-[(trimethylsilyl)ethynyl]-2,3,10,10a-tetrahydro-1H,5H-imidazo[1,2-a]pyrrolo[1,2-d]pyrazin-5-one収率 67.1%

試薬・触媒・溶媒 2

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)触媒HCID 178418476HCID 178418476、化合物触媒

反応条件

温度
80 °C

実験手順

8-bromo-10a-(4-methoxyphenyl)-2,3,10,10a-tetrahydro-1H,5H-imidazo[1,2-a]pyrrolo[1,2-d]pyrazin-5-one (120 mg, 0.33 mmol), Pd(PPh3)2Cl2 (23 mg, 0.033 mmol) and copper(I) iodide (15 mg, 0.079 mmol) were added to a 10 mL round bottom flask that was then evacuated and then filled back with argon twice. Dry DMF (5 mL) was added and the solution degassed with argon for 10 minutes. Triethylamine (0.24 mL, 1.7 mmol) and trimethylsilylacetylene (0.24 mL, 1.7 mmol) were added and the resulting brown solution was degassed with argon for a further minute. The reaction flask was sealed and heated at 80° C. until full consumption of the starting material (4 hours; monitored by LCMS). The solution was diluted with ethyl acetate (50 mL) and washed with brine (3×15 mL). The organic layer was dried (Na2SO4), filtered and concentrated in vacuo to give a material that was purified by flash chromatography (2× Biotage SP4, 12 g cartridge, CH2Cl2 3 CV, gradient 0-10% MeOH in CH2Cl2 15 CV, hold for 5 CV) and (Biotage SP4, 12 g cartridge, gradient 50-100% EtOAc in hexanes 10 CV, hold for 15 CV) to give 10a-(4-methoxyphenyl)-8-[(trimethylsilyl)ethynyl]-2,3,10,10a-tetrahydro-1H,5H-imidazo[1,2-a]pyrrolo[1,2-d]pyrazin-5-one as a yellow solid (84 mg, yield 62%). ESI-MI m/z [M+H]+ 380.0.

後処理

  1. customwas then evacuated
  2. additionfilled back with argon twice
  3. additionDry DMF (5 mL) was added
  4. customthe solution degassed with argon for 10 minutes
  5. customthe resulting brown solution was degassed with argon for a further minute
  6. customThe reaction flask was sealed
  7. additionThe solution was diluted with ethyl acetate (50 mL)
  8. washwashed with brine (3×15 mL)
  9. dry with materialThe organic layer was dried (Na2SO4)
  10. filtrationfiltered
  11. concentrationconcentrated in vacuo
  12. customto give a material that
  13. customwas purified by flash chromatography (2× Biotage SP4, 12 g cartridge, CH2Cl2 3 CV, gradient 0-10% MeOH in CH2Cl2 15 CV, hold for 5 CV) and (Biotage SP4, 12 g cartridge, gradient 50-100% EtOAc in hexanes 10 CV, hold for 15 CV)

出典と根拠

ORDレコード
ord-64f9d8749674496cb22ccab357bb172b
出典データセット
uspto-grants-2013_12
特許番号
US08604034B2

反応ノート

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