Hydrochloric Acid → N-Cyclopropyl-3-(3-(1-(2-hydroxyphenyl)cyclopropylamino)-2-oxopyrazin-1(2H)-yl)-4-methylbenzamide

Participants

Reaction Steps

To cyclopropylamine (0.60 mL, 8.46 mmol) and Methyl 3-(3-(1-(2-hydroxyphenyl)cyclopropylamino)-2-oxopyrazin-1(2H)-yl)-4-methylbenzoate (Example 167c, 0.331 g) in THF (5 mL) at rt was added isopropylmagnesium chloride (0.85 mL of a 2M solution in THF) dropwise. The reaction was stirred for 1 h and then further isopropylmagnesium chloride (0.85 mL of 2M solution in THF) was added and the reaction stirred for 16 h. Water and 2M aqueous HCl were cautiously added and the aqueous layer extracted with dichloromethane (2×). The combined organics were dried (Na2SO4) and the solvent removed in vacuo to give the subtitle product as a yellow solid (0.342 g).

Provenance & Evidence