Reactions of 1,8-dimethoxy-9-phenylxanthen-9-ol in the presence of an acid, and its basicity

Article abstract of DOI:10.1246/bcsj.72.779

In the presence of a catalytic amount of acid, the title xanthenol (1) reacted in acetone to give 1,8-dimethoxy-9-phenylxanthen-9-ylmethyl methyl ketone. Analogous reactions were observed for ethyl methyl ketone and acetophenone, but not for diethyl keton