angular 7,8-pyridazinocoumarins (2H-pyrano[2,3-f]phthalazin-2-ones) is reported via the oxidation of 8-[1-(acylhydrazono)ethyl]-7-hydroxycoumarin with (diacetoxyiodo)benzene and subsequent treatment of the derived 7,8-diacylcoumarins with hydrazine. The procedure involves transformation of a hydroxygroup into an acyl group and formation of a new C-C bond. transformation - oxidation - (diacetoxyiodo)benzene
据报道,通过将8- [1-(酰基肼基)乙基] -7-羟基香豆素与(二乙酰氧基碘)氧化,合成了有角的7,8-吡啶并香豆素(2 H-吡喃并[2,3 - f ]酞嗪-2-酮)。 )苯并随后用肼处理衍生的7,8-二酰基香豆素。该过程涉及将羟基转化为酰基并形成新的CC键。 转化-氧化-(二乙酰氧基碘)苯-2 H-吡喃并[2,3- f ]酞嗪-2-酮-角哒嗪香豆素-N-酰基hydr