Аннотация:
Novel cyclopentadiene N-ylides have been obtained by a thermal 1,4-shift of the methoxycarbonyl group in N-(1,2,3,4,5-pentakismethoxycarbonylcyclopentadienyl)-N,N-diaryl benzamidines and their structure has been proved by 1H NMR spectroscopy and X-ray analysis.