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Observations on the nature of the tethering chain in the synthesis of biaryls and heterobiaryls via intramolecular free radical ipso substitution reactions

✍ Scribed by Maria Lucília E.N. da Mata; William B. Motherwell; Feroze Ujjainwalla

Publisher: Elsevier Science
Year: 1997
Tongue: French
Weight: 223 KB
Volume: 38
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(96)02237-x

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✦ Synopsis

A study of benzylic sulfonates and their corresponding N-methylsulphonamide derivatives as substrates in potential free radical [1,6] ipso substitution reactions reveals a preference for the alternative [1,7] addition mode. Empirical guidelines for biaryl and heterobia~l synthesis using this approach can then be made.

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