Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Cesium carbonate | HCID 10796 | — |
| Reactant | 2-Methylpyrimidin-4-amine | HCID 295763 | — |
| Reactant | 1,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine) | HCID 636044 | — |
| Reactant | 4-Bromo-6-chloro-2-methyl-2,3-dihydropyridazin-3-one | HCID 59216474 | — |
| Catalyst | Bis(dibenzylideneacetone)palladium | HCID 9811564 | — |
| Solvent | 1,4-Dioxane | HCID 31275 | — |
| Product | HCID 86684416 | HCID 86684416 | 73.4% |
Reaction Steps
A 100-mL single-neck round-bottomed flask equipped with a reflux condenser was charged with 2-methylpyrimidin-4-amine (330 mg, 3.03 mmol), 4-bromo-6-chloro-2-methylpyridazin-3(2H)-one (675 mg, 3.03 mmol), Pd2(dba)3 (274 mg, 0.30 mmol), XantPhos (143 mg, 0.30 mmol), Cs2CO3 (2960 mg, 9.09 mmol), and dioxane (40 mL). After three cycles of vacuum/argon flush, the mixture was heated at 100° C. for overnight. It was then filtered and the filtrate was evaporated in vacuo. The residue was purified by silica-gel column chromatography eluting with 1:20 methanol/dichloromethane to afford 225a as a yellow solid (560 mg, 73%). MS-ESI: [M+H]+ 252.1
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US08716274B2 |
|---|
| Source dataset | uspto-grants-2014_05 |
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| ORD ID | ord-b1df6001589a44d38628b3b1273bcdb9 |
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| Source note | uspto-grants-2014_05 |
|---|
