HuagongsheHuagongshe Chemistry Print Report · For research reference only
Azobisisobutyronitrile → 3-(Bromomethyl)-6-chloro-2-(trifluoromethyl)imidazo[1,2-b]pyridazine
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Azobisisobutyronitrile | HCID 6547 | — |
| Reactant | N-bromobutanimide | HCID 67184 | — |
| Reactant | 6-Chloro-3-methyl-2-(trifluoromethyl)imidazo[1,2-b]pyridazine | HCID 53629153 | — |
| Solvent | Acetonitrile | HCID 6342 | — |
| Product | 3-(Bromomethyl)-6-chloro-2-(trifluoromethyl)imidazo[1,2-b]pyridazine | HCID 53629154 | 35% |
Reaction Steps
A mixture of 6-chloro-3-methyl-2-(trifluoromethyl)imidazo[1,2-b]pyridazine x35 (3.45 g, 1 eq, 14.64 mmol), N-bromosuccinimide (NBS; 2.87 g, 1.1 eq, 16.11 mmol) and azo-bis-iso-butyronitrile (AIBN; 240 mg, 0.1 eq, 1.5 mmol) in acetonitrile (50 ml) is refluxed for 2 hours. After cooling to room temperature, the solvent is removed under reduced pressure and the crude product is purified by preparative chromatography on silicagel (CH2Cl2) affording 3-(bromomethyl)-6-chloro-2-(trifluoromethyl)imidazo[1,2-b]pyridazine x36.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08183241B2 |
| Source dataset | uspto-grants-2012_05 |
| ORD ID | ord-d21027511739422a97c37c774559cbfd |
| Source note | uspto-grants-2012_05 |