Methyl iodide → 2-chloro-N-isopropyl-5-(5-(methylthio)-1,3,4-oxadiazol-2-yl)pyridin-4-amine

Participants

Reaction Steps

Methyl iodide (22 mmol, 2 equiv.) was added to a solution of 5-(6-chloro-4-(isopropylamino)pyridin-3-yl)-1,3,4-oxadiazole-2-thiol (42) (1.5 g, 5.5 mmol) in MeOH (10 mL). The reaction mixture was stirred overnight at room temperature. The reaction mass was concentrated under reduced pressure. The crude material obtained was purified by column chromatography through silica gel and MeOH:DCM as eluent to furnish the desired compound, 2-chloro-N-isopropyl-5-(5-(methylthio)-1,3,4-oxadiazol-2-yl)pyridin-4-amine (43). LC/MS: Purospher@star RP-18, 4×55 mm, 3 μm; Solvent A=10% ACN: 90% H2O: 20 mM NH4OAc; Solvent B=90% ACN: 10% H2O: 20 mM NH4COOAc; gradient 0-100% B over 1.5 min (3.2 min run time); retention time: 1.994 min; LCMS (ES-API), m/z 285.1 (M+H).

Provenance & Evidence