Studies on the Lignin of Eucalyptus regnans I. Thiolignin

Abstract

By pulping Eucalyptus regnans by the kraft process, acidifying the black liquor, and fractionating the product, a thiolignin has been prepared in a pure state.

Thiolignin reacts with diazomethane to yield a trimethyl derivative, and with dimethyl sulphate to yield a hexamethyl derivative.

Thiolignin, trimethylthiolignin, and hexamethylthiolignin react with acetic anhydride in pyridine to yield respectively hepta-, tetra-, and mono-acetyl derivatives.

The data obtained are consistent with the formula C₅₂H₃₅O₁₀.(OCH₃)₉.C(CH₃)OH.(CHOH)₃.CH = C(OH).OH.SH.