Hydrochloric Acid → Tert-butyl 4-((4-(4-chlorophenyl)-6-oxo-1,6-dihydropyridin-3-yl)methyl)piperazine-1-carboxylate

Participants

Reaction Steps

A mixture of EXAMPLE 307C (1.6 g) and 5% HCl (20 mL) in tetrahydrofuran (20 mL) was heated at 80° C. overnight. The solvent was removed to dryness. This solid was re-dissolved and added to tetrahydrofuran (50 mL). To this mixture were added BOC2O (di-t-butyl-dicarbonate) (1.118 g), triethylamine (0.72 mL), and 4-dimethylamionpyridine (1.4 g).

Provenance & Evidence