Diethyl Ether → N-Cyclopropyl-4-methyl-3-(3-(1-(2-(2-(methylamino)ethoxy)phenyl)cyclopropylamino)-2-oxopyrazin-1(2H)-yl)benzamide

Participants

Reaction Conditions

Reaction Steps

3-(3-(1-(2-(2-Chloroethoxy)phenyl)cyclopropylamino)-2-oxopyrazin-1(2H)-yl)-N-cyclopropyl-4-methylbenzamide (Example 167e, 5.00 g) dissolved in dioxane (15 mL) was treated with methylamine (15 mL of a 40 wt % solution in water). The resulting suspension was stirred at 100° C. for 4 h in an autoclave. The solution was evaporated to dryness. The crude product was purified (SiO2 chromatography, eluting with a 5:1:94 (v/v) mixture of methanol:triethylamine:dichloromethane respectively). The product containing fractions were evaporated in vacuo and re-purified by RPHPLC (Xterra column, 95-5% gradient of aqueous 0.2% ammonia in acetonitrile as mobile phase). The product containing fractions were combined and freeze dried to leave a solid. Trituration with diethyl ether followed by drying in vacuo overnight gave the title compound as a white powder (3.14 g).

Provenance & Evidence