Can I read Studies on the Formation of 1-(4-Hydroxy-3,5-dimethoxy-phenyl)-2-(4-hydroxy-3-methoxyphenyl)-1 -propanone and 2-(4-Hydroxy-3,5-dimethoxyphenyl)-1-(4-hydroxy-3-methoxyphenyl)-1-propanone on Acid Treatment of Birch Lignin on EtoBox?

Studies on the Formation of 1-(4-Hydroxy-3,5-dimethoxy-phenyl)-2-(4-hydroxy-3-methoxyphenyl)-1 -propanone and 2-(4-Hydroxy-3,5-dimethoxyphenyl)-1-(4-hydroxy-3-methoxyphenyl)-1-propanone on Acid Treatment of Birch Lignin by S. Li; K. Lundquist; G. Stenhagen is a Engineering article available to read on EtoBox.

What is Studies on the Formation of 1-(4-Hydroxy-3,5-dimethoxy-phenyl)-2-(4-hydroxy-3-methoxyphenyl)-1 -propanone and 2-(4-Hydroxy-3,5-dimethoxyphenyl)-1-(4-hydroxy-3-methoxyphenyl)-1-propanone on Acid Treatment of Birch Lignin about?

model compounds Mass spectrometry Birch lignin ## Summary Acid treatment (refluxing with 0.1 M HBr in dioxane-water (9:1) for 4h) of 2-(4-hydroxy-3,5dimethoxyphenyl)-1 -(4-hydroxy-3-methoxyphenyl)-1,3-propanediol gives 2-(4-hydroxy-3,5-dimethoxyphenyl)-l-(4-hydroxy-3-methoxyphenyl)-l-propanone as a major reaction product. Analogously, l-(4hydroxy-3,5-dimethoxyphenyl)-2-(4-hydroxy-3-methoxyphenyl)-l-propanone is the most prominent constituent in the reaction mixture obtained on acid treatment of l-(4-hydroxy-3,5-dimethoxyphenyl)-2-(4-hydroxy-3-methoxyphenyl)-l,3-propanediol. Both the 1,2-diaryl-l-propanones are formed on acid treatment of birch lignin and it could be concluded that they originate from about equal amounts of lignin structures corresponding to the two l,2-diaryl-l,3-propanediols. HBr favours the formation of 1,2-diaryl-l-propanones from the l,2-diaryl-l,3-propanediols while /ra/?5-4,4 / -dihydroxy-3,3 / ,5-trimethoxystilbene is obtained in very high yield when CHaSOsH is used as the catalyst.

Who reads Studies on the Formation of 1-(4-Hydroxy-3,5-dimethoxy-phenyl)-2-(4-hydroxy-3-methoxyphenyl)-1 -propanone and 2-(4-Hydroxy-3,5-dimethoxyphenyl)-1-(4-hydroxy-3-methoxyphenyl)-1-propanone on Acid Treatment of Birch Lignin?

Author

S. Li; K. Lundquist; G. Stenhagen

Publisher

Walter de Gruyter GmbH

Published

1996

Language

EN

Field

Engineering (Physical Sciences)