Sodium Bicarbonate → 4-Chloro-2-(5-chloro-2-fluoro-phenyl)-[1,8]naphthyridine

Participants

Reaction Conditions

Reaction Steps

A solution of 9.95 g (50.0 mmol) 2,4-dichloro-[1,8]naphthyridine, 8.72 g (50.0 mmol) 5-chloro-2-fluorophenylboronic acid and 5.04 g (60.0 mmol) sodium bicarbonate in 100 ml DMF and 50 ml water was heated to 80° C. under nitrogen. 701 mg (1.0 mmol) bis-(triphenylphosphine)-palladium(II)-chloride were added and the mixture was stirred for 16 hrs at 80° C. Water was added to the reaction mixture and the precipitate was filtered off, dried in vacuum and recrystallized from 2-propanol: 4-chloro-2-(5-chloro-2-fluoro-phenyl)-[1,8]naphthyridine as slightly yellow crystals; HPLC-MS: 2.49 min, [M+H] 293.

Provenance & Evidence