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[摘要]：Based on the acylation reaction of fluorenyl anions with the bis(imidoyl) chlorides of oxalic acid, a short and efficient synthesis for a series of novel bis(arylamino) fulvadienes was developed. The products were isolated as red colored and crystalline compounds in good yields. Their structures were determined by elemental analysis, MS, NMR, and additionally by X-ray crystal structural analysis. Monoimidoyl chlorides showed the same reactivity. Enamines were isolated in good yields as products. The bis(arylamino) fulvadienes can be transformed by an oxidation-ring annulation sequence into diazatetracene derivatives. These to date unknown bis-spiro derivatives of diazatetracene are well soluble in common solvents and display green fluorescence in solution. |
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