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Butler, RN,Lysaght, FA,McDonald, PD,Pyne, CS,McArdle, P,Cunningham, D
1996
July
Journal Of The Chemical Society-Perkin Transactions 1
Tricyclic phenanthrene systems: Substituted phenanthro[9,10-e]1,2,3-triazines and fused phenanthro-azolo-1,2,3-triazoles from cycloaddition-rearrangement sequences of 9,10-bisarylazophenanthrenes with 2 pi-dipolarophiles. Azolium 1,3-dipoles
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1623
1627
A range of new fused ring systems based on phenanthrene were obtained from cycloaddition-rearrangement reactions of 9, 10-bisarylazophenanthrenes with alkyne and alkene dipolarophilles. These new rings include substituted phenanthro[9,10-e]-1,2,3-triazines, the tricyclic systems, substituted 3a,6a-(biphen-2,2'-yl)hexahydropyrrolo[2, 3-d]-1,2,3-triazoles and substituted 3a,6a-(biphen-2,2'-yl)hexahydroimidazo[4,5-d]-1,2,3-triazoles. X-Ray crystal structures are reported on 2-(p-bromophenyl)-4 -methoxycarbonyl-4-(p-bromophenyliminomethoxalyl)-3,4-dihydrophenanthro[9,10-e]-1,2,3-triazin-2-ium-3-ide 6b, and 2,4-diphenyl-3a,6a-(biphen-2,2'-yl)-5,6-hexahydropyrrolo[2,3-d]-1,2, 3-triazol-2-ium-1-ide 11a.
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