Shen Zhi-qin, Sinopec Shanghai
2002
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Journal
Chinese Journal of Synthetic Chemistry
Abstract
Amino-1-methyl-3-n-propylpyrazole-5-carboxamide was prepared from 2-pentanone as a starting material. The synthetic route consists of Claisen condensation, cyclization, methylation, hydrolysis, nitration and reduction. The total yield was 46.8%, which was twice as high as the reported one.