
TY  - JOUR
A1  - Halton, B 
A1  - Russell, SGG 
T1  - Studies in the Cycloproparene Series: Cycloaddition Reactions With 1,3-Diphenylisobenzofuran
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1990
VL  - 43
IS  - 12
SP  - 2099
EP  - 2105
KW  - 
UR  - https://doi.org/10.1071/CH9902099 
N2  - The behaviour of cyclopropabenzene (1) with 1,3-diphenylisobenzofuran ( dpibf ) is temperature dependent. Addition to the strained bridge bond of (1) gives the Diels -Alder adduct (13) in tetrahydrofuran at 20&#176;C, but in chloroform at the same temperature the ring-expanded 5,10-epoxydibenzocycloheptene (12) is also formed. Compound (12) becomes the sole product from reaction at 30&#176;C or higher. Cyclopropa [b]naphthalene (2) is inert to dpibf under similar conditions but provides the dimer 6,13-dihydropentacene (15). The triazoloindazole (19) results from reaction of (2) with 4-phenyl-3H-1,2,4-triazole-3,5(4H)- dione. 
ER  -

