Pyrazole, 3-amino-4-cyano-5-ethyl- → 2-Ethyl-6-methyl-7-(alpha,alpha,alpha-trifluoro-m-tolyl)pyrazolo[1,5-a]pyrimidine-3-carbonitrile

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Reaction Steps

A mixture of 2.52 g. of 3-dimethylamino-2-methyl-3'-(trifluoromethyl)acrylophenone and 1.36 g. of 3-amino-5-ethylpyrazole-4-carbonitrile in 25 ml. of glacial acetic acid is refluxed for 15 hours and then evaporated to a residue. The residue is treated as described in Example 1, giving the desired product, m.p. 163°-164° C.

Provenance & Evidence