Triethylamine → 6,8-dichloro-2-[2-(3-chloro-pyridin-2-yl)-5-trifluoromethyl-2H-pyrazol-3-yl]-pyrido[3,4-d][1,3]oxazin-4-one

Beteiligte Stoffe

Reaktionsschritte

5-Trifluoromethyl-2-(3-chloro-pyridin-2-yl)-2H-pyrazole-3-carboxylic acid chloride (example 2, step 3) (242 mg) was added to a mixture of 3-amino-2,6-dichloroisonicotinic acid (example 1, step 8) (190 mg) in acetonitrile (3 mL). The mixture was stirred for 5 minutes at room temperature and triethylamine (220 μL) was added and stirred for 20 minutes, before a second portion of triethylamine (220 μL) was added. After the mixture was stirred for further 20 minutes at room temperature, methanesulfonyl chloride (70 μL) was added. After stirring for 2 hours at room temperature, the formed precipitate was filtered off, washed carefully with water and MTB-ether and dried in vacuum to afford 350 mg of the title compound of the formula

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