124389-48-6Relevant academic research and scientific papers
Preparation of monolignol γ-acetate, γ-p-hydroxycinnamate, and γ-p-hydroxybenzoate conjugates: Selective deacylation of phenolic acetates with hydrazine acetate
Zhu, Yimin,Regner, Matthew,Lu, Fachuang,Kim, Hoon,Mohammadi, Allison,Pearson, Timothy J.,Ralph, John
, p. 21964 - 21971 (2013/11/06)
We report here a reliable and facile synthesis of a range of monolignol γ-p-hydroxycinnamate (including p-coumarate, ferulate, and caffeate), γ-acetate, and γ-p-hydroxybenzoate conjugates, many not previously reported, that are either putative intermediat
DFRC Method for Lignin Analysis. 1. New Method for β-Aryl Ether Cleavage: Lignin Model Studies
Lu, Fachuang,Ralph, John
, p. 4655 - 4660 (2007/10/03)
A new method for selective and efficient cleavage of arylglycerol-β-aryl (β-O-4) ether linkages in lignins is described and applied to several lignin β-ether models. The term "DFRC" was coined for derivatization followed by reductive cleavage. Derivatization, accompanied by cell wall solubilization, is accomplished with acetyl bromide (AcBr); reductive cleavage of resulting β-bromo ethers utilizes zinc in acetic acid. Degradation monomers, 4-acetoxycinnamyl acetates, from β-ether cleavage by the DFRC method were identified by NMR, GC-MS, and comparison of GC retention times with authentic compounds. Under the conditions used in this study, the β-ether linkage of all models was cleaved in very high (>92%) yield. The DFRC method produces simpler mixtures of monomers with higher yields than alternative hydrolytic methods. Because of its relative simplicity, mild conditions, and exceptional selectivity, this method should become a powerful analytical method for lignin characterization.
