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发明授权
CN105968054B 匹莫苯丹关键中间体的制备 有权 转让

匹莫苯丹关键中间体的制备
摘要：
本发明涉及匹莫苯丹关键中间体6‑(4‑氨基‑3‑硝基苯基)‑5‑甲基‑4,5‑二氢哒嗪‑3(2H)‑酮(式V)的制备工艺。该工艺合成路线短，操作简单，具有工业化放大生产前景。
摘要（英）：

The invention relates to a preparation technology of a pimobendan key intermediate 6-(4-amino-3-nitro phenyl)-5-methyl-4, 5-dihydrogen pyridazine-3(2H)-ketone (formula V). The preparation technology is short in synthesis route and simple in operation, thus having large industrial production prospect. The chemical reaction formula is shown in the description.

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