Potassium Phosphate, Tribasic → HCID 59242652, compound

Participants

Reaction Steps

A mixture of 4-[5-(4-bromophenyl)-6-trifluoromethyl-pyridazin-3-yl]-piperazine-1-carboxylic acid tert-butyl ester (0.2 g, 0.41 mmol) (prepared by procedures similar to those described for D8), 4-fluorobenzeneboronic acid (0.069 g, 0.49 mmol), trans-Pd(OAc)2(Cy2NH)2 (0.015 g, 0.026 mmol), prepared by following the procedure described in Tao, B.; Boykin, D. W. Tetrahedron Lett. 2003, 44, 7993-7996, and potassium phosphate (0.261 g, 1.23 mmol) in dioxane (3 ml) was stirred at 80° C. overnight. The reaction mixture was then diluted with dichloromethane and extracted with a saturated solution of sodium carbonate. The organic layers were separated, dried (Na2SO4), filtered and the solvent evaporated in vacuo. The residue was then purified by column chromatography (silica gel; dichloromethane/heptane 3:7 to 10:0). The desired fractions were collected and evaporated in vacuo to yield D12 (0.115 g, 56%). C26H26F4N4O2 requires 502; Found 503 (MH+).

Provenance & Evidence