Bin WANG, Min-xiong LI, Shan-sheng XU, Hai-bin SONG, Bai-quan WANG
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Abstract
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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