29052-18-4Relevant articles and documents
Condensations of benzil with phenols and aryl ethers mediated by tin(IV) chloride pentahydrate
Morrison, Brian J,Musgrave, Oliver C
, p. 4255 - 4260 (2002)
The reaction of benzil with phenol at 180°C in the presence of SnCl4·5H2O produces a benzofuran, a benzofuranol, a benzodifuran, and a benzofuranone. Anhydrous tin(IV) chloride also gives a benzofuranofuranone. Other phenols and their methyl ethers yield related products. The good yields of the benzo- and naphtho-furanones make the method an attractive alternative to the benzilic acid route to such compounds.
