Vk. Aggarwal et al., Catalytic cyclopropanation of alkenes using diazo compounds generated in situ. A novel route to 2-arylcyclopropylamines, ORG LETT, 3(17), 2001, pp. 2785-2788
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A user-friendly, one-pot process for catalytic cyclopropanation of alkenes
from tosylhydrazones is described. The cyclopropanation of N-vinylphthalimi
de provides a new route to 2-arylcyclopropylamines, and this is exemplified
in the efficient synthesis of the HIV-1 reverse transcriptase inhibitor 6.