A. Dagan, G. Shaw, A. Gazit
Dec 5, 1975
Citations
0
Influential Citations
2
Citations
Journal
Chemistry Letters
Abstract
Two geometrical isomers of 4,5:8,9-dibenzo-2,10-cycloundecadien-6-yne were prepared by a Wittig reaction between 2,2′-diformyldiphenylacetylene and trimethylenedi(triphenylphosphonium bromide). Their stereochemical configuration, cis,trans (I) and trans,trans (II) were deduced from the nmr spectral data. Attempts to use (I) and (II) as precursors to the [11]annulenyl cation (III) have so far not been realized.