Polydiazo compounds

Polydiazo compounds having four and five diazo groups connected by w-phenylene units were prepared and their photoproducts, 2 (n = 4 and 5), were confirmed to be nonet and undecet ground state, respectively. 

We designed six polydiazo compounds, 8- 13, which have partial structures of the honey-comb network 5. The array-shape, cyclic, and dendritic structures were expected to produce high-spin polycarbenes after irradiation. 

Hexaketones, precursors of 8, 9, and 10, were synthesized from m-bromoben-zaldehyde, calix[6]arene, and tribromobenzene, respectively. In the synthetic sequence for dendritic polydiazo compounds, 11, 12, and 13, the key reaction was a cyclo trimerization reaction of aryl ethynyl ketone to form 1,3,5-triaroyl-... 

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