Treatment of fused oxetanes with Et2AlCl, TMSCl, acetyl chloride, or ethereal hydrochloric acid leads to the formation of spirocyclic dihydrobenzofurans through intramolecular attack of an oxygen atom of a proximal phenolic methyl ether.
|Number of pages||4|
|Early online date||3 Dec 2007|
|Publication status||Published - Jan 2008|
- Lewis acids
- neighboring-group effects
- spiro compounds