کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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228852 | 464851 | 2008 | 6 صفحه PDF | دانلود رایگان |

The mechanism underlying the oxidation of guaiacol (2-methoxyphenol) by manganese peroxidase (MnP) was studied by structural identification of the products. After separation by TLC, the products were characterized by NMR, GC–MS, and LC–MS. They were determined to be 3,3′-dimethoxy-4,4′-biphenol, a mixture of 3,3′-dimethoxy-4,4′-biphenoquinone and 3,5′-dimethoxy-4,4′-biphenoquinone, 6-methoxy-4-(4-hydroxy-3-methoxyphenyl)-1,2-benzoquinone, 3-(4-hydroxy-3-methoxy-phenyl)-5,3′-dimethoxy-4,4′-biphenol, and a mixture of 5-(4-hydroxy-3-methoxyphenyl)-3,3′-dimethoxy-4,4′-biphenoquinone and 3-(4-hydroxy-3-methoxyphenyl)-5,3′-dimethoxy-4,4′-biphenoquinone. From the direct GC–MS analysis, two other products were identified as 3-methoxy-catechol and 2-methoxy-1,4-benzoquinone. The reaction mechanism of MnP-catalyzed guaiacol oxidation is suggested on the basis of the structural information obtained for these products.
Journal: Journal of Industrial and Engineering Chemistry - Volume 14, Issue 4, July 2008, Pages 487–492