
TY  - JOUR
A1  - Halton, B 
A1  - Russell, SGG 
T1  - Studies in the Cycloproparene Series: Attempted Cycloadditions With Tricyclo-[5.4.1.0<sup>3,5</sup>]dodeca-2,5,7,9,11-pentaene
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1992
VL  - 45
IS  - 5
SP  - 911
EP  - 917
KW  - 
UR  - https://doi.org/10.1071/CH9920911 
N2  - 4,4-Dichlorotricyclo[5.4.1.03,5]dodeca-7,9,11-triene (18a) undergoes cycloaddition with 4-phenyl-1,2,4 triazoline-3,5-dione via its norcaradiene valence-bond isomer (18b) to give adduct (21)in 86% yield. By comparison the aromatic tricyclo [5.4.1.03,5]dodeca-2,5,7,9,11-pentaene (6)and its 12-chloro stereoisomer (20) fail to react; this contrasts with the behaviour of other 1,6-methano[10] annulene derivatives. 
ER  -

