The Nitroso and Nitrone Groups

Since these groups have been used extensively in spin-trapping experiments one would expect to observe readily nitroxides resulting from free radical intramolecular addition. Such an example has been reported by McConnell in the case of caryophyllene nitrosite. According to Aurich, oxidation of hydroxybenzotriazoles in aromatic solvents would involve opening of the ben- 

Intramolecular addition to a nitrone, studied by Forrester, has been observed only as a minor pathway because of competitive reactions. 

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