The method for preparing the 6-substituted-4-chromanone-2-methanoic acid has the characteristics of simple and safe operation and low production cost.
采用本发明的制备方法生产6-取代-4-色满酮-2-甲酸，具有操作简单安全、生产成本低的特点。
The method for preparing the 6-substituted-4-chromanone-2-methanoic acid has the characteristics of simple and safe operation and low production cost.
采用本发明的制备方法生产6-取代-4-色满酮-2-甲酸，具有操作简单安全、生产成本低的特点。
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