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以对硝基甲苯和多聚甲醛为原料 ,经过两种途径合成了二氨基芳香型螺双内酯 6,6′-二氨基 -3 ,3′-螺双苯酞 .发现二 ( 2 -甲基 -5-硝基苯基 )甲烷在酸性体系中经氧化反应可高收率地得到二硝基螺双内酯 ,还原二硝基螺双内酯时发现 ,在低极性溶剂中主要生成一种稳定的芳香型羟胺类化合物 6,6′-二羟氨基-3 ,3′-螺双苯酞 ,在高极性溶剂中主要生成 6,6′-二氨基 -3 ,3′-螺双苯酞 .通过 1H NMR,13 C NMR,IR,MS及元素分析确证了二氨基螺双内酯及其中间产物的结构
Using p-nitrotoluene and paraformaldehyde as raw materials, diamino-aromatic spirodixanil 6,6’-diamino-3, 3’-spirobifluanide was synthesized via two routes. Nitro-5-nitrophenyl) methane in the acidic system can be oxidized to give dinitro spirodro lactone with high yield, reduction of dinitrospisdansolactone was found to be mainly produced in low polar solvents A stable aromatic hydroxylamine 6,6’-dihydroxyamino-3, 3’-spirobiphenylphthalein mainly produces 6,6’-diamino-3, 3’-spirobiose in highly polar solvents Phthalazin.The structure of diamino spirodrolactone and its intermediates was confirmed by 1H NMR, 13 C NMR, IR, MS and elemental analysis