1-Methyl-3-aminopyrazole → HCID 25261180, compound

Participants

Reaction Conditions

Reaction Steps

2-Bromo-5-methoxy-pyridine (0.97 mmol), sodium-tert.-butylate (1.5 eq.), and 1-methyl-1H-pyrazole-3-amine (1.3 eq.) are dissolved in degassed dioxane (2 ml) and heated to 80° C. Chloro-(di-2-norbornylphosphino)(2-dimethylaminoferrocene-1-yl)palladium (II) (5 mg) in degassed dioxane (1 ml) is added and the reaction is heated for 20 hours at 110° C. The reaction is quenched with ethylacetate/methanol (30 ml, 9:1) and filtrated over celite. The solvent of the filtrate is removed in vacuo. (5-Methoxy-pyridine-2-yl)-(1-methyl-1H-pyrazole-3-yl)-amine (“A24”) is obtained after reversed phase column chromatography (water/acetonitrile+0.1% TFA) as colorless powder in a yield of 55%; HPLC (method C): 1.09 min; LC-MS (method A): 0.73 min, 205.0 (M+H+);

Provenance & Evidence