Potassium Phosphate, Tribasic → HCID 86710672, compound

Participants

Reaction Conditions

Reaction Steps

To a microwave vial was added 2-(4-fluoro-2-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (535 mg, 2.12 mmol), 6-chloro-N-methyl-N-(2,2,6,6-tetramethylpiperidin-4-yl)pyridazin-3-amine (Intermediate 1-1, 500 mg, 1.77 mmol), potassium phosphate (1.5 g, 7.07 mmol), Pd2(dba)3 (162 mg, 0.18 mmol), and SPhos (72.6 mg, 0.18 mmol), followed by addition of 1,4-dioxane (3.7 mL)/H2O (0.7 mL). The vial was purged with N2 for 5 minutes and the reaction mixture was heated at 100° C. in the microwave for one hour. The reaction mixture was concentrated in vacuo. The crude material was adjusted to pH 3 using 1 M HCl aqueous solution, loaded on an SCX column and washed with methanol, then eluted with 2 N ammonia in methanol. The product-containing fractions were concentrated to afford 6-(4-fluoro-2-methoxyphenyl)-N-methyl-N-(2,2,6,6-tetramethylpiperidin-4-yl)pyridazin-3-amine (620 mg) MS [M+H+]=373.3.

Provenance & Evidence