Ethyl Acetate → HCID 57917251, compound

Participants

Reaction Conditions

Reaction Steps

(rac)-6-Chloro-3-(1-imidazo[1,2-a]pyridin-6-yl-ethyl)-imidazo[1,2-b]pyridazine (Example 292, 200 mg, 0.672 mmol) was dissolved in DME (3.36 mL) with 3-tolylboronic acid (91 mg, 0.672 mmol), 2 M Na2CO3 solution (1.21 mL, 2.418 mmol) and tetrakis(triphenylphosphine)palladium (38.8 mg, 0.034 mmol). The RM was heated at 150° C. 5 min under microwave irradiations. It was taken up with EtOAc and washed with 10% Na2CO3 solution and brine. Then it was dried over Na2SO4, filtered and concentrated. The residue was purified by flash chromatography (CombiFlash® Companion System®, with RediSep® silica gel column, 0 to 20% MeOH in DCM). Combined fractions were concentrated. The white solid obtained was a repurified by preparative HPLC with acetonitrile and water (+0.1% TFA). The fractions were joined and were lyophilized. The residue was dissolved in MeOH and it was passed through an SPE cartridge of HCO3− to remove the TFA salt. The filtrate was evaporated to give the free salt of the title compound as a white solid (tR 0.9 min (conditions 2), MH+=354).

Provenance & Evidence