反应详情

温度

45 °C

A mixture of 100 mg (0.286 mmol) of 5-amino-2-(2,6-dichlorophenylamino)-3-methyl-3H-benzimidazole-4-carboxylic acid amide (Example 7) and 114 mg (1.15 mmol) of allyl isothiocyanate in DMF was warmed at 45° C. for 48 h. The reaction was diluted with 30 mL of brine and extracted with four 15 mL portions of EtOAc. The combined organic layers were washed with five 15 mL portions of brine, dried (MgSO4), filtered and concentrated in vacuo. The residue was adsorbed onto silica gel and chromatographed on silica gel (MeOH-methylene chloride, first 2:98, then 4:96, then 5:95) to afford 66 mg (51%) of 2-(2,6-dichlorophenylamino)-3-methyl-5-(3-allyl-thioureido)-3H-benzimidazole-4-carboxylic acid amide.

1. extractionextracted with four 15 mL portions of EtOAc
2. washThe combined organic layers were washed with five 15 mL portions of brine
3. dry with materialdried (MgSO4)
4. filtrationfiltered
5. concentrationconcentrated in vacuo
6. customchromatographed on silica gel (MeOH-methylene chloride, first 2:98