反应详情

A 15 g. portion of 1-(4-chlorophenyl)-3-(3-trifluoromethylphenyl)-2-propanone was reacted with ethyl formate and methylamine hydrochloride to prepare 10 g. of 3-(4-chlorophenyl)-1-methyl-5-(3-trifluoromethylphenyl)-4(1H)-pyridinone. The intermediate pyridinone was reduced with lithium aluminum hydride. Column chromatographic separation of the reaction mixture on a silica gel column as described in the examples above produced about 0.5 g. of the compound of Example 18, m.p. 122.5°, about 1.1 g. of the compound of Example 19, m.p. 113.5°, and about 1.3 g. of the compound of Example 20, m.p. 115.5°.

1. customto prepare 10 g
2. customColumn chromatographic separation of the reaction mixture on a silica gel column
3. customabove produced about 0.5 g