Cesium carbonate → 5-(4-iodo-2-methyl-imidazol-1-yl)-2-methyl-2H-pyridazin-3-one

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a solution of 160 mg (1.11 mmol) of 5-chloro-2-methyl-2H-pyridazin-3-one (CAS: [14628-34-3]), 230 mg (1.11 mmol) of 4-iodo-2-methyl-1H-imidazole (CAS: [73746-45-9]), in 3.5 ml of dry DMF were added 721 mg (2.21 mmol) of cesium carbonate. The suspension was stirred for 30 min at 45° C., then for 3 h at 65° C. and allowed to cool. The cristallised product is filtered off, washed with ethyl acetate and dried in vaccuo to yield 250 mg (0.791 mmol, 71%) of the title compound as a crystalline light yellow solid, MS: m/e=316.9 (M+H+).

Herkunft & Nachweise