Bin WANG, Min-xiong LI, Shan-sheng XU, Hai-bin SONG, Bai-quan WANG
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引用次数: 0
摘要
二萘呋喃与锂在无水乙醚中反应得到相应的C, o -二甲基化中间体,经DMF在- 78℃处理后,水解得到2′-羟基-1,1′-二萘-2-乙醛,产率高。然后通过2′-羟基-1,1′-联萘-2-乙醛与相应的芳香胺缩合制备了联萘桥接席夫碱。
Syntheses and Structures of Binaphthyl-bridged Schiff Bases
The reaction of dinaphthofuran with lithium in anhydrous diethyl ether led to a solution of the corresponding C,O-dilithiated intermediate which, upon treatment with DMF at −78°C, afforded, after hydrolysis, 2′-hydroxy-1,1′-binaphthyl-2-carbaldehyde in a good yield. Then binaphthyl-bridged Schiff bases were prepared by the condensation of 2′-hydroxy-1,1′-binaphthyl-2-carbaldehyde with the corresponding aromatic amines.
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