Okuma, Kentaro published the artcileReaction of benzyne with 2-hydroxy-and 2-aminophenyl ketones. Synthesis of xanthenes and acridines, SDS of cas: 596-38-3, the publication is Fukuoka Daigaku Rigaku Shuho (2011), 41(1), 23-27, database is CAplus.
Reaction of benzyne with 2-hydroxybenzophenone afforded 9-phenyl-9-hydroxyxanthene, whereas reaction with 2-hydroxyacetophenone yielded 9-methylenexanthene. 9-Methyl-9-hydroxyxanthene, initial cycloadduct, further dehydrated to give exo-methylene xanthene. Reaction of benzyne with 2-aminophenyl ketones gave acridines in good yields.
Fukuoka Daigaku Rigaku Shuho published new progress about 596-38-3. 596-38-3 belongs to alcohols-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Benzene,Alcohol, name is 9-Phenyl-9H-xanthen-9-ol, and the molecular formula is C19H14O2, SDS of cas: 596-38-3.
Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts