Abstract
It was shown that initial protonation of 9-aminomethylene-4-azafluorene takes place at the pyridine nitrogen atom. In nitrosation of this azafluorene, 4-azafluorenone oxime is formed, and in reaction with dichlorocarbene, 1′-amino-2′, 2'-dichlorospiro[4-azafluorene-9,3′-cyclopropane] is formed. Acylation yields mono- or diacyl derivatives as a function of the acylating agent and reaction conditions.
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Additional information
Russian University of National Friendship, Moscow 117923. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 527–533, April, 1995. March 14, 1995.
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Varlamov, A.V., Levov, A.N., Davydov, V.V. et al. Reaction of 9-amino(phenylamino)methylene- and 9-α-aminobenzylidene-4-azafluorenes with some electrophilic reagents. Chem Heterocycl Compd 31, 461–467 (1995). https://doi.org/10.1007/BF01177019
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DOI: https://doi.org/10.1007/BF01177019