| Previous studies have found that phosphoxides react with oxalyl chloride to produce quaternary phosphole,which is carried out by intramolecular electrophilic cycling.In addition,the methoxy group can be used as a nucleophilic group,through the intramolecular attack of quaternary phosphorylated phosphocyclopentadiene to get a special structure of the double ring skeleton molecules.We used this method to synthesize a series of special bicyclic compounds with phosphole as skeleton.The reaction conditions have a good applicability for similar substrates.The target product can stimulate a strong red orange light in the solid state under 365 nm wavelength,.This character comes from the common double-ring skeleton structure.This confirms that phosphole and its derivatives are promising compounds in the field of organic electroluminescence. |
