Triphenylphosphine → 8-[2-(4-Bromo-2-methylphenoxy)ethyl]-11-ethyl-5,11-dihydro-5-methyl-6h-dipyrido[3,2-b:2',3'-e][1,4]diazepin-6-one

Participants

Reaction Conditions

Reaction Steps

A solution of DIAD (0.44 mL, 2.40 mmol) in THF (1.0 mL) was added dropwise to an ice-cold solution of 11-ethyl-5,11-dihydro-8-(2-hydroxyethyl)-5-methyl-6H-dipyrido[3,2-b:2′,3′-e][1,4]diazepin-6-one (480 mg, 1.61 mmol), 4-bromo-2-methylphenol (318 mg, 1.70 mmol) and PPh3 (629 mg, 2.40 mmol) in THF (20 mL) at 25° C. The mixture was stirred at 0° C. for 3 h. The reaction mixture was concentrated under reduced pressure and the residue was purified by flash chromatography (Hexane:EtOAc, 7:3) to yield the title compound (437 mg, 58% yield) as a white solid.

Provenance & Evidence