Triphenylphosphine → Ethyl [(4-{[1-(6-bromo-2-pyridinyl)-2-(ethyloxy)ethyl]thio}-2-methylphenyl)oxy]acetate

Participants

Reaction Steps

A solution of (ethyl [(4-mercapto-2-methylphenyl)oxy]acetate) (386 mg, 1.71 mmol), 1-(6-bromo-2-pyridinyl)-2-(ethyloxy)ethanol (352 mg, 1.43 mmol) and PPh3 (450 mg, 1.72 mmol) in DCM (17 mL) at 0° C. under nitrogen was stirred for 10 mins and then treated drop-wise with DIAD (0.34 mL, 1.73 mmol). The resulting mixture was then stirred, with slow warming to ambient temperature over 18 h. The mixture was then reduced under vacuum and the resulting yellow oil purified by SPE (silica, 20 g cartridge), eluting with cyclohexane:EtOAc (gradient 15:1 to 5:1). Further purification using the OPTIX-SPE (C18 cartridge, 50 g) eluting with 60-80% MeCN (+0.05% HCOOH) in H2O (+0.01% HCOOH) over 56 mins afforded the title compound as an oil (232 mg).

Provenance & Evidence