Ethanol → 6-Ethoxy-4,5-dimethylpyridazin-3-amine

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Reaction Steps

6-Chloro-4,5-dimethylpyridazin-3-amine (CAS-Nr. 76593-36-7, 500 mg, 3.17 mmol, 1.0 eq) and sodium ethanolate in ethanol (16 mL, 21 w/w-%, 53.9 mmol, 17 eq) were heated for 2 h to 130° C. in a single mode microwave oven. The reaction mixture was partitioned between DCM and water. The organic phase was washed with brine and dried with sodium sulfate. The resulting mixture was filtered through a Whatman filter and the volatile components were removed in vacuo. The crude mixture was purified via MPLC (Biotage Isolera; 28 g NH2-cartridge: hexane→hexane/EtOAc 1/1) to give 267 mg (50% yield) of the title compound.

Provenance & Evidence