1,4-Dioxane → HCID 67064500, compound

Participants

Reaction Conditions

Reaction Steps

A suspension of N-(7-chloro-2-methylpyrazolo[1,5-a]pyrimidin-5-yl)-4-(2-hydroxypropan-2-yl)benzamide (2F, 60 mg, 0.174 mmol), 2,3-dihydrobenzo[b][1,4]dioxin-6-ylboronic acid (41 mg, 0.226 mmol), and 1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II) (7 mg, 9.5 μmol) in 2:1 1,4-dioxane/saturated aqueous NaHCO3 (0.58 mL of 1,4-dioxane and 0.29 mL of saturated aqueous NaHCO3) was prepared in a 10 mL microwave reaction vessel and the sealed reaction vessel warmed to 110° C. for 10 minutes in a CEM microwave reactor. The reaction mixture was cooled to rt, diluted with methanol, filtered, and purified via preparative HPLC (55-65% (MeCN/H2O gradient+0.01% TFA). Lyophilization of the combined fractions gave the titled compound as a yellow solid (57.2 mg, 74%). Melting point (99.5-99.6° C.). 1H NMR (DMSO-d6) δ: 11.14 (s, 1H), 8.02 (d, J=8.6 Hz, 2H), 7.95 (s, 1H), 7.75 (d, J=2.3 Hz, 1H), 7.61 (d, J=8.3 Hz, 2H), 7.57 (dd, J=8.5, 2.1 Hz, 1H), 7.10 (d, J=8.6 Hz, 1H), 6.36 (s, 1H), 4.31-4.40 (m, 4H), 2.41 (s, 3H), 1.46 (s, 6H); ESI-MS: m/z 445.2 (M+H)+.

Provenance & Evidence