Diisopropylethylamine → Methyl-3-[3-({1-[2-(benzyloxy)phenyl]-1-methylethyl}amino)-2-oxopyrazin-1(2H)-yl]-4-chlorobenzoate

Participants

Reaction Conditions

Reaction Steps

A solution of methyl 3-(3-bromo-2-oxopyrazin-1(2H)-yl)-4-chlorobenzoate (Example 330e, 3 g) dissolved in toluene (15 mL) was treated with N-ethyldiisopropylamine (2.99 mL) and 2-(2-(benzyloxy)phenyl)propan-2-amine (Example 198d 2.107 g) under nitrogen. The resulting mixture was stirred at 125° C. for 8 h in a sealed tube. The reaction mixture was diluted with water (150 mL), and extracted with ethyl acetate (250 mL). The organic was dried (MgSO4), filtered and evaporated to afford crude product. Purification (SiO2 chromatography eluting with 50% diethyl ether in isohexane) gave the subtitle compound (2.230 g).

Provenance & Evidence