Sodium Carbonate → Ethyl 3'-[3-[(cyclopropylamino)carbonyl]-4-oxo-1,8-naphthyridin-1(4H)-yl]-1,1'-biphenyl-4-carboxylate

Participants

Reaction Conditions

Reaction Steps

A mixture of NAPHTHYRIDINONE 3 (1 eq), ethyl 4-bromobenzoate (3 eq), Na2CO3 (3.5 eq.; 2M in H2O), Pd(PPh3)4 (0.15 eq.) in n-propanol-DMF (1:1, 0.1M) was stirred at 80° C. for 2 h. The mixture was cooled to rt, quenched with brine and diluted with EtOAc. The organic extracts were washed with brine, dried over Na2SO4, filtered and concentrated. The residue was triturated in ether/EtOAc and then isolated by filtration to afford the title compound as a white solid.

Provenance & Evidence