化学合成。
化学合成
合成路线 1（1. 合成：360056-45-7）
产率：99%
合成条件：With palladium 10% on activated carbon In methanol at 20℃; for 16 h;
实验步骤：参考例2 4-氨基-1H-吡唑-3-羧酸甲酯参考例1中得到的4-硝基-1H-吡唑-3-羧酸甲酯（9.63g，56.3mmol），10％钯/碳（1.00g）的混合物 将甲醇（150mL）在氢气氛和室温下搅拌16小时。 过滤催化剂，减压蒸发溶剂，得到标题化合物（7.87g，收率99％）。 1H-NMR（CDCl3）：δ3.93（3H，s），4.08（2H，brs），7.25（1H，s）。
参考文献：
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