Dichloromethane → HCID 44520266, compound

Participants

Reaction Steps

In step 3-5, in a microwave vessel sodium carbonate (105 mg, 1.0 mmol), 3-cyano phenylboronic acid (200 mg, 1.36 mmol) and Pd(DPPF)-dichloride catalyst (1,1′ bis(diphenylsphosphino-ferrocene)-dichloropalladium (II) adduct with dichloromethane) (100 mg, 0.12 mmol) were added to a solution (3S)-1-(3-bromoimidazo[1,2-b]pyridazin-6-yl)-2-(3-fluorophenyl)pyrrolidin-3-ol (1.40 g, 0.36 mmol) and 4 mL of 1,4-dioxane/water (3:1). This solution was then subjected to the following microwave conditions using a laboratory microwave instrument (conditions: 150° C., 200 W max threshold, 20 atm. max pressure, 20 minute reaction time). The reaction mixture was purified directly with reverse phase C-18 HPLC (water/acetonitrile 90:10 to 10:90 gradient) to yield 3-(6-((3S)-2-(3-fluorophenyl)-3-hydroxypyrrolidin-1-yl)imidazo[1,2-b]pyridazin-3-yl)benzonitrile (3-5) as a mixture of diastereomers. 1H NMR (400 MHz, D6 acetone) δ ppm 8.85 (br s, 1H), 8.40-8.03 (m, 3H), 7.90-7.22 (m, 5H), 7.10 (app d, J=5.5 Hz, 1H), 6.98 (app t, J=4.5 Hz, 1H), 5.25 (app d, J=4.5 Hz, 1H), 4.80 (app q, J=7.5 Hz, 1H), 4.30 (br s, 1H), 3.82-3.75 (m, 1H), 3.3-3.55 (m, 1H), 2.42-2.34 (m, 1H), 2.25-2.12 (m, 1H). LCMS observed m/z 400.2.

Provenance & Evidence