Реакция #509846

Уравнение реакции

EDC

HOBT

C-(3-Chloro-pyrazin-2-yl)-C-(2-phenylquinolin-7-yl)-methylamine

3-Methylenecyclobutanecarboxylic acid

→

desired product

3-Methylenecyclobutanecarboxylic acid [(3-chloropyrazin-2-yl)-(2-phenyl-quinolin-7-yl)-methyl]-amide

Растворители

CH2Cl2

CH2Cl2

Условия реакции

Обработка

1. 1
   workup.ADDITIONadded to the homogenous reaction mixture
2. 2
   КонцентрированиеAfter 24 h the reaction was concentrated in vacuo
3. 3
   workup.DISSOLUTIONdissolved in EtOAc
4. 4
   Промывкаthe organic layer was washed with sat. NaHCO3
5. 5
   ПромывкаThe organic layer was washed with H2O and brine
6. 6
   Сушкаdried over sodium sulfate
7. 7
   Фильтрацияfiltered
8. 8
   Концентрированиеconcentrated in vacuo
9. 9
   ДругоеThe crude product was purified by silica gel column chromatography [Jones Flashmaster, 10 g cartridge, eluting with 50% EtOAc:Hex]

Методика

C-(3-Chloro-pyrazin-2-yl)-C-(2-phenylquinolin-7-yl)-methylamine (690 mg, 1.99 mmol) was dissolved in 6.0 mL of CH2Cl2 followed by the addition of EDC (600 mg, 2.98 mmol) and HOBT (300 mg, 1.99 mmol). 3-Methylenecyclobutanecarboxylic acid (300 mg, 2.59 mmol) was dissolved in 1.0 mL of CH2Cl2 and added to the homogenous reaction mixture. After 24 h the reaction was concentrated in vacuo and dissolved in EtOAc and the organic layer was washed with sat. NaHCO3. The organic layer was washed with H2O and brine. The organic layers where combined, dried over sodium sulfate, filtered and concentrated in vacuo. The crude product was purified by silica gel column chromatography [Jones Flashmaster, 10 g cartridge, eluting with 50% EtOAc:Hex] to obtain the desired product as a white fluffy solid; 1H NMR (400 MHz, CDCl3): δ=2.82-2.92 (m, 2H), 2.99-3.06 (m, 2H), 4.77-4.80 (m, 2H), 6.81 (d, 1H, J=7.8 Hz), 7.45-7.54 (m, 3H), 7.83-7.88 (m, 3H), 8.10 (d, 2H, J=7.1 Hz), 8.22-8.23 (brm, 1H), 8.39 (d, 1H, J=1.79 Hz), 8.59 (d, 1H, J=2.5 Hz); MS (ES+): 440.93 (M+1), 442.91 (M+3).

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