The recently discovered catechyl lignin (C-lignin) represents an ideal lignin platform for depolymerization because of its exclusive benzodioxane linkages between caffeyl alcohol monolignols. In this report, we described catalytic hydrogenolysis of castor seed coats by using deep eutectic solvents, where naturally grown C-lignin was extracted from endocarp matrix and depolymerized into monomeric catechols. The production efficiency of catechols from present one-pot manner was comparable to that from a two-step approach. High selectivity towards 4-propyl catechol was observed in DESs reactions, which was complementary to previous reports. This study offered a step-efficient protocol for producing a single, valuable catechol compound from bulk sustainable castor seed coats.

最近发现的儿茶基木质素（C-木质素）代表了解聚的理想木质素平台，因为它在咖啡醇单木质素之间具有独特的苯二恶烷键。在本报告中，我们描述了使用深共熔溶剂对蓖麻种皮进行催化氢解，其中从内果皮基质中提取自然生长的 C-木质素并解聚成单体儿茶酚。目前一锅法的儿茶酚生产效率与两步法的生产效率相当。在 DESs 反应中观察到对 4-丙基邻苯二酚的高选择性，这是对先前报道的补充。这项研究提供了一个步骤高效的方案，用于从散装可持续蓖麻种皮中生产单一、有价值的儿茶酚化合物。