Magnesium orthosilicate → 3-Methyl-6-[3-(trifluoromethyl)phenyl]imidazo[1,2-b]pyridazine

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

A mixture of 5.18 g of 3-chloro-6-[3-(trifluoromethyl)phenyl]pyridazine and 4.60 g of aminoacetoneethyleneketal was heated at 150° C. under argon for 4 hours. The cooled mixture was dissolved in dichloromethane and the solution passed through a short pad of hydrous magnesium silicate. The filtrate was concentrated, diluted with hexane and chilled to give 0.8 g of crystals, mp 98°-100° C.

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