1-benzyl-1,2-dihydroisonicotinamide in methanol 0.0833333 h; Ambient temperature; Yield given. Yields of byproduct given;

sodium tetrahydroborate in water 0.25 h;

1-benzyl-4-carbamoyl-1,4-dihydropyridine in methanol T=35°C; various pyridinium salts and dihydropyridines, hydrogen transfer reaction; Product distribution;