Gold catalyzed Heck-coupling of arenediazonium o-benzenedisulfonimides
Margherita Barbero1, Stefano Dughera
1Dipartimento di Chimica, Università di Torino, C.so Massimo d'Azeglio 48, 10125 Torino, Italy. stefano.dughera@unito.it.
Abstract:
Diazonium salts, and precisely arenediazonium o-benzenedisulfonimides, have been used for the first time as efficient electrophilic partners in gold catalyzed Heck-coupling reactions. The synthetic protocol was general, easy and gave the target products in satisfactory yields. Mechanistic insights revealed the fundamental roles of the o-benzenedisulfonimide anion as an electron transfer agent thath promotes a radical pathway that does not require the presence of photocatalysts or external oxidants.
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