Studies on the Lignin of Eucalyptus regnans F.Muell. VIII. The Isolation of an Ether-Soluble Ethanol Lignin

Abstract

A second fraction, soluble in ether, has been isolated from the products of ethanolysis of Eucalyptus regnans F. Muell. wood meal. This fraction, designated ethanol lignin-B, has been characterized by methylation with diazomethane, acetylation and benzoylation both of the ethanol lignin-B and its methyl derivative, and the formation of a phenylhydrazone. The analysis of these derivatives indicates that, while ethanol lignin-B is very similar to the previously described ether-insoluble ethanol lignin-A, it differs in its reaction with benzoyl chloride and with phenylhydrazone.