Figure 1. Oxidative degradation of lignin model compounds 1 and 2 by MTPPS (free or adsorbed on Amberlite) and KHSOS. chloromethane and separated on Merck PLC plates RP-18 F mS (eluent: methanol/water, 50/50). The major products from 1 (3 and 4) or from 2 (3 and 5) were identified by'H and 13C NMR and also by mass spectrometry. They are identical with authentic samples (4 and 5 were prepared by HRP/KHS05 oxidation of 3- ...