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As a first example of opening a secondary aziridine with a tertiary carbani
on, the title amines (3a-c, aryl = phenyl, 4-tert-butylphenyl, 2-naphthyl)
were synthesized by opening N-(diphenylphosphinoyl)-7-azabicyclo[4.1.0]hept
ane, aziridine 1, with the corresponding alpha-potassium isopropylarenes, f
ollowed by hydrolysis of the resulting phosphinamides 2a-c.