polyphenols in aqueous acetic acid solutions to yield phenolic benzylstyrenes and isomeric neoflavanoids. These facile condensations provide chemical support for Ollis' theory of biogenetic C-alkylation with cinnamyl pyrophosphate. Racemic dihydro-4,4′-dimethoxydalbergione has been synthesized by an oxidative condensation of methoxyquinol and 1-(4-methoxyphenyl) propan-1-ol in aqueous acetic acid.