Water → N-(5-chloropyridin-2-yl)-2-[((4-((methylamino)methyl)-3-chlorothiophen-2-yl)carbonyl)amino]-5-chlorobenzamide

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Reaction Steps

To methylamine (2.0 M in tetrahydrofuran, 16 mL, 32 mmol) was added a solution of N-(5-chloropyridin-2-yl)-2-[((4-(chloromethyl)-3-chlorothiophen-2-yl)carbonyl)amino]-5-chlorobenzamide (3.0 g, 6.3 mmol) in DMF (10 mL) and the mixture stirred at ambient temperature. After 4 hours the reaction mixture was poured into water (100 mL), concentrated in vacuo to remove the tetrahydrofuran and extracted with ethyl acetate (2×75 mL). The combined organics were washed with brine (75 mL), dried over MgSO4 and concentrated of all volatiles in vacuo. Purification by flash chromatography on silica gel afforded 1.1 g (38% yield) of N-(5-chloropyridin-2-yl)-2-[((4-((methylamino)methyl)-3-chlorothiophen-2-yl)carbonyl)amino]-5-chlorobenzamide as a yellow solid; NMR (DMSO-d6/TFA) 11.4 (s, 1), 11.0 (s, 1), 8.9 (br s, 2), 7.6-8.4 (m, 7), 4.2 (m, 2), :2.6 (m, 3) ppm.

Provenance & Evidence