Reaktion #79937

Reaktionsgleichung

6-ethynyl-2,2,4,4-tetramethylchroman

tetrahydrofuran

Reagent C

2-fluoro-4-iodo phenyl acetic acid ethyl ester

triethyl amine

ethyl-2-fluoro-4-iodo phenyl acetate

2-fluoro-4-iodo phenyl acetic acid ethyl ester

→

title compound

[2-Fluoro-4-(2,2,4,4-tetramethyl-chroman-6-yl-ethynyl) phenyl] acetic acid ethyl ester

Lösungsmittel

hexane

ethyl acetate

Reaktionsbedingungen

Vorschrift

Following general procedure F and using 6-ethynyl-2,2,4,4-tetramethylchroman (0.204 g, 0.95 mmol), ethyl-2-fluoro-4-iodo phenyl acetate (Reagent C, 0.263 g, 0.86 mmol), triethyl amine, tetrahydrofuran, copper(I)iodide (0.025 g, 0.13 mmol) and dichlorobis(triphenylphosphine)palladium(II) (0.075 g, 0.11 mmol) followed by flash column chromatography over silica gel (230-400 mesh) using 5-10% ethyl acetate in hexane as the eluent, the title compound was obtained (0.21 g, 62%).

Quelle