The reactions of the N-substituted dibenzylamine N-oxides (1)(R = benzyl, n-butyl, or cyclohexyl) with n-butyl-lithium in ether gave the corresponding cis-2,3-diphenylaziridines in moderate yields (20–42%); application of this reaction to other related compounds enabled a novel ring system, 10,11-dihydro-10,11,5-nitrilomethanodibenzocycloheptene to be synthesized.
H. Takayama and T. Nomoto, J. Chem. Soc., Chem. Commun., 1982, 408 DOI: 10.1039/C39820000408
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