反应详情

温度

55 °C

Ethyl 4-(4-cyano-1H-indol-1-yl)butanoate (D56) (8.25 g, 32.2 mmol) was dissolved in EtOH and treated with NH2OH.HCl (4.47 g, 64.4 mmol) and NaHCO3 (8.11 g, 97 mmol) and heated to 55° C. for 1 day and two nights. Further NH2OH.HCl (500 mg) and NaHCO3 (500 mg) were added and the reaction was heated for another 3 hours and then separated the inorganics by filtration, washing well with EtOH. The solvent was evaporated and the residue dried under high vacuum. Trituration with ether and dcm afforded two batches of the title compound N2668-20-A8 (5.14 g) and N2668-20-A9 (976 mg). δH (400 MHz, d6-DMSO) 1.15 (3H, t), 1.98 (2H, apparent quin), 2.25 (2H, t), 4.03 (2H, q), 4.21 (2H, t), 5.73 (2H, br s), 6.82 (1H, dd), 7.15 (1H, apparent t), 7.27 (1H, dd), 7.35 (1H, d), 7.51 (1H, d), 9.58 (1H, br s). MS (ES): C15H19N3O3 requires 289; found 290 (MH+).

1. temperaturethe reaction was heated for another 3 hours
2. customseparated the inorganics
3. filtrationby filtration
4. washwashing well with EtOH
5. customThe solvent was evaporated
6. customthe residue dried under high vacuum