HCID 86689435, compound → HCID 86689434, compound

Participants

Reaction Steps

To a solution of 90.0% 2-(4-iodophenyl)-7-((tetrahydro-2H-pyran-2-yl)oxy)-3-(4-((tetrahydro-2H-pyran-2-yl)oxy)phenyl)chroman-4-one (104.891 g, 150.7 mmol, 1.0 equiv.) in THF (1.2 L) at 5° C., was added Methylmagnesium chloride 3.0 M solution in THF (160.000 ml, 480.0 mmol, 3.2 equiv.) by addition funnel over 30 minutes. The temperature did not rise about 8° C. during the addition. The reaction was removed from the ice bath and stirred at room temperature and stirred for another hour. TLC (20% ethyl acetate in hexanes) showed the reaction had no starting material. The solution was cooled in an ice bath, and carefully quenched with saturated ammonium chloride (35 mL). Ethyl acetate (1.2 L) and water (1.2 L) were added to the reaction mixture, and the layers were separated. The aqueous layer was extracted with EA (1 L). The combined organic layer was washed with brine (1 L), dried over anhydrous Na2SO4, filtered and concentrated in vacuo to yield a pale yellow foam (111.26 g crude). This material was used without further purification.

Provenance & Evidence