D-fructose, a biomass-derived carbohydrate has been identified as an environmentally benign C₂ synthon in the preparation of synthetically useful 2-hydroxymethylbenzimidazole derivatives by coupling with 1,2-phenylenediamines. The pivotal features of this method include metal-free conditions, short time, good functional group tolerance, gram scale feasibility and the synthesis of benzimidazole fused 1,4-oxazine.

中文翻译：

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使用 D-果糖作为 C2 Synthon 可持续合成 2-羟甲基苯并咪唑

D-果糖是一种生物质衍生的碳水化合物，在通过与 1,2-苯二胺偶联制备合成有用的 2-羟甲基苯并咪唑衍生物时，已将其鉴定为环境无害的 C ₂合成子。该方法的关键特征包括无金属条件、时间短、官能团耐受性好、克级可行性和苯并咪唑稠合 1,4-恶嗪的合成。