The Stobbe t-butyl half esters from 3-methoxy-, 3, 3'-dimethoxy-, 3, 4, 3', 4'-tetramethoxy-, and 3, 4, 5, 3', 4'-pentamethoxy-benzophenones were cyclized (and subsequently hydrolyzed) to methoxy-substituted t-butyl l-phenyl-4-hydroxy-2-naph-thoates by heating with anhydrous sodium acetate in acetic anhydride. Complete product analyses were made on the reaction mixtures based on selective alkaline extractions of the various acidic ...
