目的研究以庚醛和原甲酸三乙酯为原料制备庚醛二乙缩醛的工艺条件。

Aim \ Enanthal diethyl acetal is prepared with heptaldehyde and triethyl orthoformate as raw materials.

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前言： 以2′，5′-二羟基苯乙酮和原甲酸三乙酯缩合得到6- 羟基- 4- 色酮，再经催化氢化得到标题化合物。

6-Hydroxychroman was prepared by catalytic hydrogenation of 6-hydroxy-4-chromone, which was prepared via condensation of 2′, 5′-dihydroxyacetophenone with triethyl ortho-formate.

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