29954-06-1Relevant academic research and scientific papers
Intermolecular Thermal Reaction of Arylnitrenes with Furans
Benati, Luisa,Montevecchi, Pier Carlo,Toselli, Maurizio,Spagnolo, Piero
, p. 1859 - 1864 (2007/10/02)
4-Methoxy-, 4-chloro-, and 4-nitro-phenylnitrenes have been thermally generated by decomposition of the corresponding aryl azides in the presence of furan and a series of 2-substituted and 2,5-disubstituted furans. 4-Nitrophenylnitrene has been shown to be capable of undergoing electrophilic addition to the furan ring both at the α- and β-position, whereas only evidence of α-attack has been provided by 4-chlorophenylnitrene.On the other hand, no evidence of electrophilic attack has been obtained with 4-methoxyphenylnitrene, which affords only products ascribable to the triplet nitrene.The formation of a number of products ultimately resulting from nitrene attack at the α-position of the furan ring followed by a ring-opening process and the general occurrence of 1-(4-nitrophenyl)- and 1-(4-chlorophenyl)-1,2,3-triazole from thermolysis of 4-nitro- or 4-chloro-phenyl azide in the presence of the furans examined is discussed.
