
%0 Journal Article
%A Halton, B 
%A Officer, DL 
%T Studies in the cycloproparene series: Halogenation and dehydrohalogenation of some 1a,9b-dihydrocyclopropa[l]phenanthrenes
%J Australian Journal of Chemistry
%D 1983/06/01
%V 36
%N 6
%P 1167-1175
%K 
%R https://doi.org/10.1071/CH9831167
%U https://www.publish.csiro.au/paper/CH9831167 
%X Dehydrohalogenation of (1&#945;,1a&#946;,9a&#946;)-1-chloro-1a,9b-dihydrocyclopropa [l]phenanthrene (4b) yields products by way of the corresponding dibenzobicyclohepta-2,4,6-triene (5b) whilst under solvolytic conditions the 7-t-butoxydibenzocyclohepta-1,3,5-triene (llb) is formed by cyclopropyl-allyl ring expansion. When subjected to bromination the cyclopropaphenanthrenes (4a,c) yield halophen-anthrenes(14a) and (15c) by cleavage of an external bond of the cyclopropane ring. 
