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N-(1-methylprop-2-ynyl)pyridazine-4-carboxamide[ No CAS ]
Yield
Reaction Conditions
Operation in experiment
With N-ethyl-N,N-diisopropylamine; In methanol; at 100℃; for 2h;Microwave irradiation;
To a mixture of <strong>[34231-77-1]methyl pyridazine-4-carboxylate</strong> (1 .00 g) in methanol (4 ml_) was added 1-methylprop- 2-ynylammonium chloride (2.29 g) and A/,A/-diisopropylethylamine (3.92 ml_), followed by heating at 100C under microwave irradiation for 2 hours. After cooling to room temperature the reaction mixture was concentrated and purified by silica gel chromatography eluting with ethyl acetate to afford N-( 1- methylprop-2-ynyl)pyridazine-4-carboxamide. (0792) NMR (400MHz, CDCIs) 9.49-9.67 (m, 1 H) 9.38 (dd, 1 H) 7.87 (dd, 1 H) 6.83-7.07 (m, 1 H) 4.94-5.13 (m, 1 H) 2.37 (d, 1 H) 1.48-1.63 (m, 3H)