Dimethylformamide → Methyl 4-benzyl-3-oxo-3,4-dihydropyrazine-2-carboxylate

Reaction equation

[Cl:14][CH2:15][c:16]1[cH:17][cH:18][cH:19][cH:20][cH:21]1.[H-:1].[Li+:2].[O:22]=[CH:23][N:24]([CH3:25])[CH3:26].[O:3]=[c:4]1[c:5]([C:10](=[O:11])[O:12][CH3:13])[n:6][cH:7][cH:8][nH:9]1>>[O:3]=[c:4]1[c:5]([C:10](=[O:11])[O:12][CH3:13])[n:6][cH:7][cH:8][n:9]1[CH2:15][c:16]1[cH:17][cH:18][cH:19][cH:20][cH:21]1