A survey of methods for the generation of aryl radicals from o-alkenyloxyarene diazonium salts demonstrates that dihydrobenzofuran derivatives can be efficiently formed by treatment of (1) or (2) with Bun3SnH–Et2O or with NaI–Me2CO; methods utilising the iodo-compound (3; X = I) are less effective.
A. L. J. Beckwith and G. F. Meijs, J. Chem. Soc., Chem. Commun., 1981, 136 DOI: 10.1039/C39810000136
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