Abstract
The reaction of benzil with phenol at 180degreesC in the presence of SnCl4.5H(2)O 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. (C) 2002 Elsevier Science Ltd. All rights reserved.
Original language | English |
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Pages (from-to) | 4255-4260 |
Number of pages | 5 |
Journal | Tetrahedron |
Volume | 58 |
DOIs | |
Publication status | Published - 2002 |
Keywords
- benzofurans
- diones
- furanones
- phenols