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Helicenes: an intramolecular insertion reaction involving the helicene skeleton

par Jespers, Jean-Jacques ;Defay, Nicole ;Martin, Ricardo
Référence Tetrahedron, 33, 16, page (2141-2142)
Publication Publié, 1977

Article révisé par les pairs

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Résumé :

1-Formyl[6]helicene tosylhydrazone (1a) heated in benzene solution in the presence of NaH gave a carbene insertion product, whose structure (2) was determined by 1H and 13C-NMR spectroscopy and fully confirmed by an X-ray diffraction study carried out by A. Van Meerssche et al. The resolution of the new hydrocarbon (2) has been achieved by hplc, using a silica-gel column impregnated with (-)TAPA. © 1977.