(Dimethyl-1,3-thiazol-5-yl)methanamine → 7-(3,5-dimethyl-4-isoxazolyl)-N-[(2,4-dimethyl-1,3-thiazol-5-yl)methyl]-6-(methyloxy)-3-nitro-4-quinolinamine

Participants

Reaction Conditions

Reaction Steps

To a solution of 4-chloro-7-(3,5-dimethyl-4-isoxazolyl)-6-(methyloxy)-3-nitroquinoline (for a preparation see Intermediate 18, 1.5 g) in acetonitrile was added [(2,4-dimethyl-1,3-thiazol-5-yl)methyl]amine (1.6 g) and the resulting mixture was stirred overnight at 80° C. Another portion of amine (0.64 g) was added and the mixture was stirred at 80° C. for 6 h. The reaction mixture was diluted with water, extracted with DCM and the organic phase were dried over Na2SO4, and concentrated to dryness to give a dark red oil. The residue was purified by flash chromatography on silica gel, eluting with DCM/methanol (99:1 then 95:5) to give 7-(3,5-dimethyl-4-isoxazolyl)-N-[(2,4-dimethyl-1,3-thiazol-5-yl)methyl]-6-(methyloxy)-3-nitro-4-quinolinamine (1.13 g) as an orange oil.

Provenance & Evidence