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 oC, afforded, after hydrolysis, 2'-hyd...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 oC, 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.展开更多
The first synthesis and structural characterization by X-ray crystallography of racemic 2,2'-dihydroxy-[1,1']binaphthalenyl-3,3'-bis-hydroxamic acids were reported.The com-pound(C28H30N4O8,Mr = 550.56) crystalliz...The first synthesis and structural characterization by X-ray crystallography of racemic 2,2'-dihydroxy-[1,1']binaphthalenyl-3,3'-bis-hydroxamic acids were reported.The com-pound(C28H30N4O8,Mr = 550.56) crystallizes in orthorhombic system,Fdd2 space group with a = 13.055(3),b = 34.871(7),c = 12.570(3) ,V = 5722(2) 3,Z = 8,Dc = 1.278 g/cm3,λ = 0.71073 ,μ(MoKα) = 0.095 mm-1,F(000) = 2320,S = 1.021,R = 0.0349 and wR = 0.0802 for 1757 observed reflections with I 〉 2σ(I).The N-H and O atom are involved in two-dimensional intermolecular hydrogen bond nets,which further stabilize the structure.展开更多
基金the National Natural Science Foundation of China(Nos.20574036, 20672058 and 20421202)the Specialized Research Fund for the Doctoral Program of Higher Education of China(No.20050055008)the Program for New Century Ex-cellent Talents in University(No.04-0229).
文摘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 oC, 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.
基金Supported by the National Natural Science Foundation of China (No. 20971029)Natural Science Foundation of Guangxi Province (No. 2010GXNSFD013018 and 2010GXNSFF013001)
文摘The first synthesis and structural characterization by X-ray crystallography of racemic 2,2'-dihydroxy-[1,1']binaphthalenyl-3,3'-bis-hydroxamic acids were reported.The com-pound(C28H30N4O8,Mr = 550.56) crystallizes in orthorhombic system,Fdd2 space group with a = 13.055(3),b = 34.871(7),c = 12.570(3) ,V = 5722(2) 3,Z = 8,Dc = 1.278 g/cm3,λ = 0.71073 ,μ(MoKα) = 0.095 mm-1,F(000) = 2320,S = 1.021,R = 0.0349 and wR = 0.0802 for 1757 observed reflections with I 〉 2σ(I).The N-H and O atom are involved in two-dimensional intermolecular hydrogen bond nets,which further stabilize the structure.