(Phenylmethyl)hydrazine → 3,4-Dichloro-6-phenylpyridazine

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

3,4-Dichloro-6-phenylpyridazine was synthesized from □-oxobenzenebutanoic acid and 1-(phenylmethyl)hydrazine in 2 steps according to a procedure by Sircar (Sircar, I. J Het. Chem. 1983, 20,1473-1476.) 3,4-Dichloro-6-phenylpyridazine (100 mg, 0.44 mmol) was combined with sodium methoxide (1.1 mL of a 0.50M solution in methanol, 0.55 mmol, 1.25 equiv.) and methanol (296 μl, 1.5M) in a resealable tube and heated to 65° C. for 1 hour. The methanol was evaporated in vacuo, and water was added to the residue. The mixture was extracted with DCM, dried over K2CO3, filtered and concentrated in vacuo, to afford 3,4-dimethoxy-6-phenylpyridazine and 3-methoxy-4-chloro-6-phenylpyridazine, the title compound, as a solid.

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