The Synthesis And The Study Of The New Type P=C Double Bond

Compared with phosphinines,6-methoxy-5-phosphaphenanthrene does not react with methanol and 2,3-dimethyl-1,3-butadiene.This indicates that the methoxy group has the effect of stabilizing the P=C double bond.And the nitrogen atom also has the same effect.Therefore,we are very interested in the characteristics of the P=C double bond compounds which have nitrogen atom and methoxy group.The synthesis of novel P=C double bond compounds by 7-phosphanorbornenes bridges collapsed is discussed in this thesis and some results have been achieved:(1)Through the reaction of 7-phosphanorbornenes with oxalyl choride or alchlor,some P=C double bond compounds which contain nitrogen atom and methoxy group have been synthesized.(2)The type of substituent has effect on the stability of the product.(3)In addition,the derivatization reactions of the products have been introduced and several novel and stable N,P-containing heterocyclic compounds have been successfully synthesized.