SELECTIVE AEROBIC ALCOHOL OXIDATION METHOD FOR CONVERSION OF LIGNIN INTO SIMPLE AROMATIC COMPOUNDS
申请人:WISCONSIN ALUMNI RESEARCH FOUNDATION
公开号:US20140235838A1
公开(公告)日:2014-08-21
Described is a method to oxidize lignin or lignin sub-units. The method includes oxidation of secondary benzylic alcohol in the lignin or lignin sub-unit to a corresponding ketone in the presence of unprotected primarily aliphatic alcohol in the lignin or lignin sub-unit. The optimal catalyst system consists of HNO
3
in combination with another Brønsted acid, in the absence of a metal-containing catalyst, thereby yielding a selectively oxidized lignin or lignin sub-unit. The method may be carried out in the presence or absence of additional reagents including TEMPO and TEMPO derivatives.
描述了一种氧化木质素或木质素亚单位的方法。该方法包括在未保护的主要脂肪醇存在下,将木质素或木质素亚单位中的次苄基醇氧化为相应的酮。最佳催化剂体系由HNO3与另一种Brønsted酸组成,在无金属催化剂的情况下,从而产生选择性氧化的木质素或木质素亚单位。该方法可以在存在或不存在包括TEMPO和TEMPO衍生物在内的额外试剂的情况下进行。