Abstract
Abstract Quinone methides prepared in situ from phenylcoumaran and s-C-l lignin models which did not contain a s-hydroxymethyl group, readily formed addition products with anthranol but not with anthrahydroquinone. For s-aryl lignin models containing the hydroxymethyl group, the retro-aldol reaction (liberating formaldehyde) was so facile under the conditions used that stilbene formation from the quinone methide took precedence over adduct formation.
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