Efficient Cobalt-Catalyzed Oxidative Conversion of Lignin Models to Benzoquinones
Efficient Cobalt-Catalyzed Oxidative Conversion of Lignin Models to Benzoquinones
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DOI：
10.1021/ol401065r
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发表时间：
2013-06-07
期刊：
影响因子：
5.2
通讯作者：
Bozell, Joseph J.
中科院分区：
文献类型：
--
作者：
Biannic, Berenger;Bozell, Joseph J.
采用以大体积杂环氮碱为取代基的新型Co-Schiff碱催化剂，在分子氧的作用下，成功地将代表木素初级亚结构单元的酚类木质素模型单体和二聚体高产率地氧化为苯醌。这是第一个能够高产率转化S和G木质素模型酚的催化系统的例子，这是有效利用木质素作为化学原料所必需的过程。
Phenolic lignin model monomers and dimers representing the primary substructural units of lignin were successfully oxidized to benzoquinones in high yield with molecular oxygen using new Co-Schiff base catalysts bearing a bulky heterocyclic nitrogen base as a substituent. This is the first example of a catalytic system able to convert both S and G lignin model phenols in high yield, a process necessary for effective use of lignin as a chemical feedstock.