反应详情

温度

60 °C

To a solution of 200 mg 3,7-Diiodo-4-methoxy-1H-indole-2-carboxylic acid methyl ester in 2 ml DMF 20 mg (60% in oil) sodium hydride were added at RT. After stirring for 30 min 121 mg 3-Bromomethyl-5-(5-chloro-thiophen-2-yl)-isoxazole [prepared by adopting a procedure described by Ewing, William R.; Becker, Michael R.; Choi-Sledeski, Yong Mi; Pauls, Heinz W.; He, Wei; Condon, Stephen M.; Davis, Roderick S.; Hanney, Barbara A.; Spada, Alfred P.; Burns, ChristopherJ.; Jiang, John Z.; Li, Aiwen; Myers, Michael R.; Lau, Wan F.; Poli, Gregory B; PCT Int. Appl. (2001), 460 pp. WO 0107436 A2] were added and the mixture was heated for 1 h at 60° C. After subsequent cooling of the reaction to RT and addition of 5 ml water the mixture was filtered through a chem elut® cartridge by elution with ethyl acetate. After concentration under reduced pressure the residue was treated with 30 mg lithium hydroxide monohydrate in THF/water 2:1. After stirring for 2 h at 60° C. the reaction was cooled to RT. The mixture was acidified with half concentrated hydrochloric acid to pH 2 and the precipitate collected by filtration and washed with 3 ml water The product was obtained as a white solid which was dried under reduced pressure. Yield: 200 mg.

1. customprepared
2. temperatureAfter subsequent cooling of the reaction to RT
3. filtrationwas filtered through a chem elut® cartridge by elution with ethyl acetate
4. concentrationAfter concentration under reduced pressure the residue
5. additionwas treated with 30 mg lithium hydroxide monohydrate in THF/water 2:1
6. temperaturewas cooled to RT
7. filtrationthe precipitate collected by filtration
8. washwashed with 3 ml water The product
9. customwas obtained as a white solid which
10. customwas dried under reduced pressure