the direct synthesis of phosphorus-substituted azulenes, when a phosphinocyclopentadienide is used as one of the reactants. The azulenyl phosphines produced in this fashion are preferentially isolated as the corresponding phosphine oxides or phosphine borane adducts.
当使用膦基
环戊二烯作为反应物之一时,Hafner azulene合成可用于直接合成
磷取代的azulene。以这种方式生产的薁基膦优先分离为相应的氧化膦或膦
硼烷加合物。