Here we report a strategy to synthesize C₇ carboxylic acids via the reaction of glucose, CO₂ and H₂. The reaction can be realized using Rh(acac)(CO)₂ as catalyst and I₂ as promoter in the binary solvent of acetic acid and water at 160 °C. The strategy also applies to other C_n saccharides, where the corresponding C_n+1 carboxylic acids could be obtained and the yield of the acids can reach 72% when glyceraldehyde was used. The reaction pathway was proposed based on a series of control experiments. This work utilized saccharide and CO₂ simultaneously via C–C bond formation, which opens a promising way of biomass utilization and CO₂ conversion.

中文翻译：

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由糖、CO2 和 H2 合成羧酸

_{在这里，我们报告了一种通过葡萄糖、CO 2}和H ₂反应合成C ₇羧酸的策略。_{该反应以Rh(acac)(CO) 2}为催化剂，I ₂为促进剂，在乙酸和水的二元溶剂中于160℃下实现。该策略也适用于其他C _n糖，当使用甘油醛时，可以获得相应的C _{n+1羧酸，并且酸的产率可以达到72%。}反应途径是根据一系列对照实验提出的。该工作通过C-C键的形成同时利用糖和CO ₂，​​开辟了一条生物质利用和CO的有前途的途径₂转换。