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。